Tracey's annoyed from being the smallest in the family, because even Megan, her little sister is taller than her, so she decides to invent a stretching machine which will make her taller. But do you think it will work?
Tracey dares Jim and Jake, to ride down the town's highest mountain. While at that, Tracey's cousin visits and he's going to be the one who going to ride down tha mountain with Jake.
Sandy, Tracey's dog needs to get obedience lessons and Tracey is going to invent a machine that will make her dog does what she says. Instead, it becomes a mind controlling machine, that works only on humans. Gordon is baby-sitting Baby Rocky and he doesn't know what to do. So, he steals the machine, and also trying to take over their town.
Everyone in Tracey's family loses most of their important stuff, and when it was her turn to lost something, it's time to invent, The Lost Thing Finder, which she thought can find things more than she expects.
Today is Tracey's Mom's Birthdayt and she's running out of ideas for a present. Her bother and sister had one, unfortunatly, got into some disaster. While trying to figure out an idea for a present, without realising that Tracey had been doing some pretty helpful things lately.
Tracey feels awful that Shamus doesn't get to go on the coolest concert because he had to go to a family reunion on that same day. She thought that having two Shamus at the same time would be the only solution. But how would they be able to do it?
It's Pet Day and there are a pretty a lot of contests for your pets. Shamus is going to join the smartest pet competition. He's bringing Cedrik, his smart mouse, along. When he left the mouse in the lab, it was gone. Jim and Jake tricked them that they know where Cedrik is, but they don't. Tracey and Shamus had to get the twenty dollars before lunch time, even though, Jim and Jake doesn't know anything.
Tracey just hates camping but she has to go in their school trip in the great outdoors. everyone else is enjoying except for her. She just had a great idea on inventing an Alien Transmitter. But when she heard some voices, she thought it was aliens and everyone else are laughing at her. Do you really think that there are aliens?
Shamus is picked to join this year's quiz bee. Tracey said it would be a breeze, but not as quite as she thought. Shamus' friend, Harvey, is also joining the quiz bee. And also, Tracey made up a brain machine so Shamus can easily memorize the things he needs to know. Too bad the brain machine didn't go as quite as Tracey thought it would.
It's the holidays, and how come the holidays come, it starts to rain? That's what Tracey thought. It had been two weeks and it was still raining. She had to beat the weather by putting up their own greenhouse. But when she just having fun, school comes in too quickly. So, Tracey stops the clock and gets as much fun as she wants. But disaster arrives just on top of their roof.
Mrs. Carmody is holding up another school play and no one this time wants to join except for Jim. So, Tracey decides to write down all of her friends and classmates into the list. But will it be another disastrious play?
Tracey and Shamus are testing out their model flying machine that went long for ten seconds, but not until Jim and Jake crashes it down to the lake. And also, Jim told the duo a story about the lake monster. Tracey made up a replicant of a submarine to get their plane back and they just found out there was also a monster in the lake too.
The homework hound is on attack and whatever Tracey and everyone else do, they always get attacked by the hound. Then, the next day, their homework would be piled up in front of the school gate. She had to find out about that hound. While she was completing her invention with Shamus, Megan, her little pesky sister, wants to know how that thing works. Tracey and Shamus made up something that would scare her away. But instead it made her curious. So, Megan wants something to be invisible, Tracey is going to make her invisible. But she couldn't really make her invisible. While Megan was in the stage of being invisible, she also found out that the homework hound, was really Claw, Jim and Jake's dog.
When Shamus goes for something, he goes for it one hundred percent. This year it was frogs and he knows frogs more than any other kid. Shamus is just to drop out another frogs in a little pond when the mischevious brothers showed up with a racing car. This really annoyed Tracey and Shamus. The two borthers kept messing up the place, so, the two of them had to beat them in their own game. The only problem is that they don't know how to drive. So, they ask Uncle Arthur for help.
Tracey and Shamus plan out a costume for the fancy dress party at their school. While they're planning for the party, they also make the alien spaceship as one of their props and somehow it malfunctions.
Shamus' bike is a collector's item, but not all the people appretiate it. Especially, the McConaly brothers. Shamus secretly wants a new bike, and Megan, give the duo a very riduculous advice but a great idea. So they invent the Rainbow Machine. The Rainbow Machine is a success for earning money and also a target object for the McConalys to steal.
Tracey is going to join this year's kite festival but the only problem is that she just had to invent the perfect kite. Too bad she's stuck with chores and homework. All she needs is an assistant that would do the mindless work while she gets on her kite. So much for having an assistant. Robo Tracey gets all the attention from the real Tracey's family. So, Tracey decided to make her own robot family. The kite festival is just about to arrive and the two Traceys just made up the same kite. The two of them were flew up in the air and the McBeans and the robots just had to work together to get them back on the ground. But in the end, it was just one McBean family is enough.
When Mrs. Carmody took the class to a field trip to the farm, Tracey just got bored until she saw a horse. She knew it had a pretty good name, only it was Tinkle. She asked her parents if she could have a horse, they didn't said no, but rather, they tried to let her know the responsibilities to taking care of a horse. It was really hard but just as she was about to give up, instead, she had a great idea. She'll make her very own horse. But this also makes Megan in love with the mechanical horse. Also, this sends Tracey's little sister into the rapids of the river.
Shamus has to join in the country's running race, because it has been a family tradition. Even if he doesn't win, as long as he beats a McConaly. Tracey trains Shamus in the track but she thinks Shamus is too slow. So, Tracey invents the zoom boots. And also, Tracey has to deal with the chores her mom and dad assigns her.
Shamus wants to join the gardening competion and grow the biggest tomato. But he grows his naturally, so, now he's losing hope since everyone else is using chemicals. Tracey puts up the greenhouse in her backyard. But when they idd grew the biggest tomato, they also made a bug as big as a tomato.
Tracey hates Thursdays because she has to go to cooking class and she's more worst at cooking than at malfunctioning inventions. But in order to get out of cooking class, she has to join the sports team, and guess what? She's more worst at sports than cooking. What would she choose? Burn a cake or break a bone?
Gordon hates getting up early, which makes him late to go to school, and the principal is going to suspend him if he's late again. And also, Tracey gets a crush on the scicence club's president. Tracey is really independent to join the club, but the president didn't allowed her. So, to prove that Tracey is good enough for the club, she's going to invent the Gordon Get Ready Bed, which would also solve her big brother's problem. Tracey gets in but also the club president wants to compete Tracey's invention to the science fair. What would Tacey choose to do?
Gordon gets a crush on the new girl student and he wants to impress her. Tracey also wants to get to the Leonardo exhibition except that her parents are too busy to take her. And they also think that she's too young to go alone. Tracey's only option is to ask Gordon. As in return, Gordon wants her to help him impress the new student.
The city's mayor demolishes the old playground and rebuilds a safer one. Unfortunately, the new playground is so lame, so Tracey and Shamus rebuilds it to make it more exciting. Instead of the kids playing, the grown-up take over. Now, the grown-ups doesn't want to do their jobs ever again and Tracey has to convince them.
Tracey is just waiting for Shamus so they could finish their flying machine for their science project. Shamus just bought a new skateboard that almost took his allowance. When they made up some minor mistakes on the plane, Shamus' new board just broke. Tracey wanted to fix up the board and just trying to take it away from Shamus, it just broke into pieces. Also, Tracey had to get new wheels for her flying machine. She could find anything else that was perfect except for Shamus' wheels. She used it without asking Shamus and this started the argument. But afterwards, it really started to bore Tracey to invent by herself.
It's class piture day and Tracey wants to look her best. Shamus was on a holiday vacation and he just came back in time for the class picture. When Shamus was just about to join the class, Jim and Jake noticed that Shamus had freckles. This made Shamus desperate but Tracey tried everything to cheer him up. She even tried to up make-up on Shamus. Finally, it was time to invent away to get rid of those freckles. She invents a machine that would spin off the freckles. It does work but not noticing that the freckles spreads out in the whole town. Tracey and Shamus must get things back to normal before they end up in jail.