Justin moves into his new house, but discovers that there are people already living there.
Now he is comfortable in his new house, Justin wants to have a housewarming party. In order to help, Robert the robot has turned the heating up to full, while Justin has forgotten to invite the guests and Little Monster is in a very cheeky mood. Will the party be ruined?
Chris is coming to visit. Robert is delighted that he is coming, because he likes things to be just right, not like messy Justin. Except that when Chris finally arrives, Robert discovers that his friend is even more conscious about cleanliness than he is. The house is so spotless that no one dares do anything. How can things change? With Little Monster's help, of course.
Robert has been very busy inventing. He is very proud of his hair tonic. Unfortunately, the tonic tends to turn everyone's hair the wrong colour. Nina tries to save the day with one of her own inventions.
It is Bake A Cake Day in Justin Town and Justin decides to give Robert a treat for all his hard work. He needs the help of Little Monster and all his friends to make sure that Robert does not see the cake before it is ready
All is well in Justin's House - until news arrives that Auntie Justina is paying a visit. Last time she came, Little Monster poured custard into her bag. Everything needs to be spick and span, and Little Monster must not be seen, especially near Justina's bag!
Justin is going out to dinner, but he has played football in his best suit. As long as he doesn't shrink it in the wash, everything will be fine. Will Justin follow the washing instructions properly? And how will a giant duvet come to everyone's rescue?
Justin is keen to be part of Race Day and wants to beat Chris and Dee to the finish.
Everyone in Justin's House wants to start with art. Unfortunately, Little Monster wants to use the same things as Justin to paint the perfect picture.
Every month something terrible happens - Justin and Robert try to give Little Monster a bath. It's always Justin who ends up getting soaked. Will Little Monster finally get a wash this time around?
Justin prepares food for his friend Katie on Get-Fit Day. His idea of fit food is very different from hers, while Robert has invented the Jigglometer 3000 to ensure that Justin keeps on the move.
Nisha and her friends Mish, Moosh and Mogo visit Justin. Moosh stays over to find out more about life in Justin's House. Justin and Robert do their best to entertain her, but think they've lost her instead.
Robert has invented a Converter, which changes the sounds of things. Unfortunately he falls into his contraption, so that he ends up talking gobbledygook.
Robert is so hard-working that Justin decides to send him on holiday. The only problem is that Robert doesn't want to go, because for him, every day is a holiday in `Justin's House'.
Justin and Robert decide to clear and recycle around the house. They get things ready for Mr Bloom to take to his Composterium, but will the objects they gather be any use to Mr Bloom's Nursery?
Something is blocking the pipes - but what is it? Robert and Justin find out that it's a furry Flitter. With Little Monster's help, they finally find a better place for the Flitter to stay in, but only after many soakings.
The Justin Times announces that Cousin Cuddle is coming from Monstovia to stay, while Little Monster is going in exchange. Will Cuddle be easier to control than Little Monster?
Robert's friend Jodie is coming to visit. Justin thinks she's come for a singing lesson, little knowing that Jodie is a wonderful singer. By the end of the show, it's Justin who learns how to perform a song brilliantly.
Someone is making a mess every night in Justin's House, while Justin always wakes up tired in the morning. They discover that these two things may be related when Mr Maker comes round for a sleepover.
Justin discovers there's a Fancy Dress Day taking place in Justin Town. He's very excited, but what should he wear? And will they ever find out why magical things keep happening in the house?
Little Monster is unhappy, but Justin and Robert don't know why. Their good friend Nisha comes over to help cheer Little Monster up. Only after Justin has been pied five times and tries to wipe his face do they discover why Little Monster is sad.
Mr Bloom has sent a special seed to Justin. Unfortunately Justin and Robert feed it the wrong growing material and the plant threatens to eat the house. With some help from Mr Bloom, Little Monster manages to save the day.
Robert and Little Monster are getting the house ready for Christmas. Justin tries to help, but keeps making more and more mess. Things get even worse when he tries to wrap a present for Father Christmas.
Every time Justin and Little Monster sneeze something messy happens in Justin's House. Helped by a doctor download, Robert does his best to cure the pair of their Hottyspottyitis.
Special guests Chris and Pui join Justin and Robert for Little Monster's very messy birthday party.
When all the jobs in Justin's house get a bit much for Robert, Justin decides to help him out with a superturbo robot called Roberta.
Justin's house hosts the first ever Justinship Games, and Justin dreams of winning a gold medal.
Robert's favourite scientist, Nina, is coming to visit Justin's house. Before the visitor arrives, Justin the detective needs to detect where a mystery pong is coming from.
With the help of the noisy neighbour and a few other tricks, Robert and Little Monster concoct a plan to stop Justin selling his house.
Justin builds a time machine and transports everyone in Justin's House back in time. Look out for a few familiar looking ancestors along the way!
Despite his best efforts, Robert cannot get Justin's Cake-a-pulter 100,000 to work. This is a job for Roberta the superturbo robot - but only after Justin has treated her and Robert to a not so peaceful dinner in the house.
Chris and Pui want to put on a play in Justin Town and Justin's house is the perfect place to do it. Director Chris may have just the part for Justin who is keen to show off his acting skills.
A snow monster has been spotted up Monster Mountain. Justin decides to go exploring to try to spot the snow monster for himself.
The Wheely Good trophy is the star prize at the Justin Town Vehicle Show. Justin and Robert do their best to get Justin's car ready to be judged by the mystery star judge.
When the heating at the Justin Town Zoo breaks down all the animals need somewhere to stay for a day or two. Eager to help, Justin brings home some animals.
The race is on in Justin's house to fill the one remaining space in the Justin Town Space Mission. Only time will tell who will be the best astronaut for the job, man, robot or monster.
Justin's House opens its doors as a department store. Only time will tell if the first ever customer, Andy Day, will manage to buy any of the bargains on offer.
Special guest Mister Maker helps bring all the fun of the fair to Justin's house. Plus, a very cheeky little ghost is on the loose from the Ghost Train.
The first ever Justinbury Music Festival is taking place in Justin's house, so long as rock star Justin and his new band are ready in time to open.
Justin's House opens its doors as a hotel. Justin and Robert do their best to make the house look like a proper hotel while the first guest dozes upstairs.
There is a Grand Robot Ball in Justin Town, it's the perfect way for Robert to recharge his batteries. However, Robert can only go to the ball if he can find someone to look after Little Monster, and Justin.
Robert invents a dream machine to discover the funny thing that Justin is dreaming about.
Helped by a giant potato and Andy Day, Justin and Robert do their best to print the Justin Times.
When Little Monster's tooth falls out, everybody hopes the tooth fairy will visit Justin's house.
Justin hopes his attempt at home improvements will win Mister Maker's Makeover Challenge.
Things get very messy when Justin and Robert try to make Little Monster a gingerbread den.
Justin, Robert and Little Monster are surprised to meet their exciting new neighbour Mac the Explorer.
Robert invites super-cool popstar Bustin Grooves to lunch, but no matter what they do their guest just will not sing. Guest starring Darren Hart.
Things turn messy when Robert invents a cake-making machine.
Justin, Robert and Little Monster prepare for a special visit from the King, but it remains to be seen whether Justin's House will get the Royal Seal of Approval.
Robert wants to read a book but Justin and Little Monster really want him to play with them instead.
Justin and Robert are given some very pungent cheese, but the horrible smell makes Little Monster run away and attracts the attention of Funella Furchester and a cheeky mouse. Guest starring Louisa Gold.
Robert and an excited Justin enter a dance competition. Guest starring Darren Hart.
Justin dresses up as Granny Justina when he and Robert forget to invite her round for a special tea party with guest Katy Ashworth.
Justin, Robert and Little Monster try to protect Gem's jewels from Captain Sinker when the stars of Swashbuckle pay a visit for Pirate Day. Guest starring Gemma Hunt and Ella Kenion.
Everybody decides to dress up as superheroes, but Robert is disappointed because he is the only one without a costume. He may still be able to save the day without a special outfit.
Justin wants to perform magic, so Robert calls in the help of a real magician to make sure Justin's tricks are truly magical.
Justin decides to dig up a dinosaur and turn his house into a museum.
Justin accidentally throws away Robert's favourite duster, so he tries to make amends by purchasing a futuristic dusting machine: the Dustomatic 3000.
Robert and Justin get their hands on a magical wishing wand from Mac's backpack, but their wishes quickly spiral out of control.
Justin, Robert and Little Monster try to look after a giant and a rather naughty plant for Mr Bloom.
Robert is being judged for a special robot award, but is too nervous to pass all the tests - so Justin decides to take them for him.
Little Monster blocks the pipes with custard, so Robert calls in the help of slop experts Cook and Line from Swashbuckle.
Justin needs to fix Robert the Robot's memory chips when they accidentally come loose.
Robert cannot go to the real beach, so Justin and Mac turn the house into one instead. Guest starring Paul Hawkyard from Old Jack's Boat.
Justin is in a singing mood, so Robert uses a new invention to help his friend pick his favourite song.
Things don't quite go as planned when Justin tries to get his last and most important Rambling Ranger badge - the Wild Camping badge.
Robert has brought four dusters to life to help dust and tidy around Justin's House, but the mischievous Dusterlings soon go rogue, making a mess of the house and tickling anyone that moves.
Things don't quite go to plan when Justin becomes Robert's butler for the day, in order to host a special cake party for some top Cake Experts from the Justin Town Cake Society.
Justin has lost his favourite socks and is convinced that someone in Justin's House must have taken them, he even starts to suspect his trusty friends!
Things soon turn messy when Justin surprises Robert and insists on giving his best robot friend a special day to remember for 'Robot Day'.
Robert tries hard to get his latest Climate-mate invention working properly, in order to cool down the temperature in Justin's House!
When Robert tells Justin that his Giggle Gasket is broken and that he can't laugh, Justin does everything he can to help his best friend get his laughter back.
When the power goes off in Justin's House, Justin and Robert must learn to work together to get the lights and TV working again in order to watch their favourite TV programmes.
Justin and Robert are having a stargazing party to watch the rare Justin's Comet, which is passing over Justin Town for the first time in a gazillion years. They set up a massive telescope so everybody can witness the event together.
Justin, Robert and Little Monster are excited to spend the day with all their friends, but wake to discover that nobody is there.
Justin Fletcher entertains a live audience of children. Cat has lost her favourite Cat Pack, so Robert calls on someone special to help look for it.
Justin has started a wonderful plant collection, so Mr Bloom delivers a special new flower to Justin's House along with a mysterious Super Swellberry, which contains magical growing gloop to help the plant grow.
Justin, Robert, Little Monster and Cat attempt to get ready before famous photographer Iris Shutterspeed arrives to take a group picture to send to Granny Justina.
Justin is in a singing mood and has been singing so loudly all day that he has lost his voice. Ever the caring friend, Robert tries various funny ways to help.
Robert's much cooler younger brother Reggie is coming to visit Justin's House, so Robert tries everything he can to show that he can be just as cool.
Justin and Robert are surprised when three messy aliens called the Odd Bods turn up on their doorstep and start causing chaos around the house.
Cat is about to go on another big adventure, but she can't go anywhere because her Cat-pack is too full and too heavy to carry.
Justin has some excellent news for Robert and Little Monster - Cat from next door is coming round to film a TV show all about everyday life in Justin Town, and they’re going to be in it! But when Cat arrives, camera in hand and with Gary recording sound, she just wants them to be themselves and act naturally, which is easier said than done when they’re as excited as they are.
Cherry makes a new pizza that no-one likes, but when they try to be polite, she wants to make the pizza for the whole of Justin Town. They must stop her or tell the truth.
It’s Socky Sort Day in Justin’s House, but when Little Monster takes all the socks, it leads everyone to think that she’s hibernating - but can they stay quiet so she can sleep?
Justin and Robert keep getting in each other’s way, so with the help of Gary, they split the house in two with a wall. But being by themselves isn’t as good as they think it’ll be.
Cat is trying out for the local football team, so Justin and Robert attempt to help her train. It’s not until Cherry calls her friend Chloe Kelly that Cat gets some real help!
When Robert gets a computer bug, Justin gives him his favourite video game to take his mind off things - but Robert pretends he’s not better so he can finish the game.
Everyone needs help in Justin’s House. Luckily, Cat is always happy to lend a hand, but today she tries to help everyone at once and gets into a bit of a muddle.
Robert’s old robot teacher Mrs Sprocket is coming to Justin’s House for a check-up, so Mrs Wilson and Gary need to train them to be sensible as soon as possible!
Justin throws an animal-themed party. There’s dancing, games, singing and a giant jelly, and everyone dresses up in animal fancy dress! But who is the mystery tiger?
Robert returns from his holiday to find a very messy house because Justin and Little Monster haven’t done any tidying whilst he’s been away. To stop it from happening again, Robert makes a big machine that keeps an eye on the house and sounds an alarm when someone is about to be messy. But, it's very loud and causes everyone to make a mess!
Andy and The Odd Socks are playing a surprise gig for Justin! But the band need to hide in funny places around Justin’s house so they don’t spoil the big surprise.
Little Monster wants to make a piece of art for the house. It doesn't go well, so Justin organises an art class with Justin Town’s most famed artist - and things get messy.
Roll up! Roll up! The circus is in Justin Town, but when all the tickets sell out, Justin puts on a very special circus for Cat and creates a wonderful big top in Justin’s house.
It’s the prettiest town competition, but a hungry caterpillar has eaten all the flowers in Justin’s garden, leaving everywhere looking a mess. Can Justin and Robert save the day?
Justin, Robert and Little Monster are planting vegetable seeds in the back garden and can’t wait for them to grow into tasty vegetables to make vegetable soup - one of Little Monster’s favourites. But every time they look away, a peckish pigeon jumps down and eats a seed! Justin and Robert decide they need to protect the vegetable seeds before they’re all eaten, and realise what they need is a scarecrow.
Little Monster’s auntie is coming to stay, and Justin and Robert want to make sure everything is perfect. But it turns out that big monsters are very different to little monsters!
It’s the Justin Town Fun Run, and Mrs Wilson has asked Justin to help finish off the course - but he worries it’s not fun enough and keeps adding things to make it more fun.
Mrs Wilson house-sits at Justin’s House, but when she's alone, an alien spaceship crash-lands in the back garden. Mrs Wilson must help the aliens get home before Justin gets back.