ARPO needs to put Cookie to bed before his battery runs out. But with constant noise and distractions, Cookie cannot get to sleep. ARPO runs his battery all the way down trying to keep the house quiet and shuts down, leaving Cookie to cuddle up beside him and finally sleep.
Cookie gets a boo-boo and ARPO tries to make it better, but nothing seems to work. Safetina tries to help too, but goes overboard baby-proofing the entire house, covering everything in bubble wrap, including ARPO. ARPO learns that some things can only be fixed by kissing it better.
Cookie finds a magic kit and wants ARPO to put on a magic show. ARPO tries, but is upset when his wand does not make anything disappear. He tries again and Cookie vanishes. ARPO searches the whole house, only to find Cookie reappear in his magic hat.
The Brightman family adopts baby Cookie, who immediately proves to be a challenge for ARPO. When Cookie activates the cleaning robot Zoom Zoom and chaos breaks loose, ARPO tries to protect the house, but Cookie ends up saving the day.
ARPO wants to express his feelings to ARPI, but his robotic attempts at romance do not go quite as planned. With Cookie's help, ARPO learns that even a machine can show affection in its own clumsy way.
ARPO is determined to win an Easter bunny-ear crown for Cookie during the park's big egg hunt. His competitive mission quickly turns chaotic as ARPO and Cookie run into one Easter disaster after another.
Cookie is celebrating her first Christmas, and ARPO wants everything to be perfect, from the cookies and tree to the presents. His efforts spiral into holiday chaos before ARPO learns what really makes Christmas special.
On Halloween, Cookie and Danny celebrate with ARPO when a noise from the closet reveals what appears to be ARPO's evil twin. ARPO panics and tries to protect the children, unaware that Dad is only playing a prank in an ARPO costume.
Cookie is obsessed with flowers, despite being allergic to them. She escapes to the park to see all the pretty flowers, sending ARPO on a wild goose chase. But when Cookie brings home a bouquet of dandelions for Mom, it is Mom who sneezes them all away.
Cookie and Danny battle for ARPO's attention, each trying to one-up the other and have ARPO all to themselves. Their back-and-forth puts ARPO out of commission, leaving Cookie and Danny to play with each other and realize they actually enjoy their sibling's company.
When a scruffy squirrel crashes ARPO and Cookie's day out at the park, a concerned ARPO brings Cookie back home, only to discover the squirrel has followed them. Now ARPO must keep the tenacious and misunderstood squirrel from invading their home in order to keep Cookie safe.
Cookie needs a hug, but ARPO does not understand what she wants. The other robots see how frustrated Cookie is and try to help, from play-acting to building a hugging machine, until ARPO finally understands and gives Cookie a big hug.
ARPO is busy trying to finish the chores while the kids really want to play. They kidnap the gecko and turn the house into a game, forcing ARPO to chase after them and get the chaos back under control.
It is Cookie's first birthday, and the family has planned a traditional Korean Dolijanchi. ARPO and the bots are in charge of making sure everything is perfect. The family gathers around the Dolijanchi mat for Cookie's big moment, but the item she chooses surprises everyone.
ARPO and the kids go camping in the backyard, but it starts to rain. ARPO gets locked outside while the kids head inside with a sneaky raccoon and run riot in the house. When ARPO finally gets back in, they make peace and enjoy an indoor campfire, raccoon included.
Cookie has a cold, so Mom activates new robots to help her feel better. ARPO has trouble getting them to work, which makes Cookie unsettled. When Danny comes home from school, he knows just what Cookie needs: her penguin plushie.
Cookie and ARPO have a new playdate with Timmy Glitch, the bad boy next door. Timmy is a bad influence, and Cookie joins his naughty antics around the Brightman house. ARPO and Safetina put them in time out, and they learn it is always better to be nice.
The Brightman family gets a new pet, Bobo the dog. As cute as he is, Bobo causes mischief and runs rings around ARPO and the bots. Cookie loves it, but ARPO wants to stop things before they get out of control.
ARPO must protect Dad's last donut from a hungry Cookie, Danny and Mr. Nutters the squirrel. After a ruckus, Dad shares the donut with Cookie and Danny, who then share it with Dad and ARPO. By the time they discover another box, Mr. Nutters has eaten them all.
The kids get a brand new playhouse and Refix has to build it. ARPO is jealous and tries to micromanage the project, which leads to disaster. With Cookie's help, they learn to work together and build a playhouse everyone can enjoy.
Cookie and ARPO are watching the big soccer match when Cookie accidentally breaks the remote. ARPO tries to fix it, but something goes wrong and every gadget in the Brightmans' smart house goes haywire. Can they fix the remote before Mom gets home?
When ARPO accidentally swallows Cookie's pacifier, he gets intense hiccups that make his robot gadgets malfunction. Now Cookie and the bots must cure his hiccups before an out-of-control ARPO levels the whole town.
Cookie plays with animal fridge magnets and sticks them onto ARPO's head. The cat magnets short out ARPO's memory, and when he reboots, he really thinks he is a cat. Cookie, Refix and Zoom Zoom must catch and fix ARPO before he causes too much kitty mischief.
ARPO and Cookie team up to play hide and seek with Danny and the bots, but the others are much better at hiding than expected. To lure them out, ARPO and Cookie must use the bots' own personalities against them.
Mom wants to grow her own garden using high-tech science, but her gadgets and robots work a little too well. The backyard turns into a disaster zone with a giant sunflower and ARPO and Dad being chased by a rain cloud. Luckily, the kids' tried and true gardening methods work.
When ARPO and Cookie go grocery shopping, a simple task becomes a challenge to stop Cookie from making a mess and upsetting the strict store manager. The supermarket falls apart, but Cookie makes a lobster friend and gets her favorite cereal.
When Cookie and Mom build a cardboard robot, ARPO meets the mysterious ARPO Junior, unaware that it is just Danny in disguise. ARPO tries to teach his new robot helper, but the misunderstanding quickly turns into chaos.
Danny and Cookie set up a pretend doctor's practice to treat their stuffed toys. But when they expand the business to the neighborhood animals, ARPO and the bots must deal with a waiting room full of hungry squirrels and other mischievous creatures.
Cookie accidentally triggers one of her mother's laboratory devices, shrinking ARPO to the size of a small toy. Cookie is thrilled to have her best friend in a more huggable form. Babysitting used to be tough for ARPO, but it is even tougher when the baby thinks she is sitting on you.
ARPO and Cookie visit Dad's music store, where they discover that ARPO has no talent for music. Dad tries to find the perfect instrument to express ARPO's inner feelings, while missing the real musical genius right under his nose: Cookie.
When Refix accidentally frees one of ARPO's hands, it goes rogue. Now ARPO must capture the hand and reunite it with his body, which turns out to be harder than expected.
When ARPO takes Cookie away for a nap while she and Danny are playing superheroes, Danny vows to save his sister from ARPO's clutches. To do it, he must face every villain that gets in his way.
A freak accident causes ARPO and Zoom Zoom to swap chips and personalities. Cookie and ARPO, trapped in Zoom Zoom's body, must restore the natural balance and switch them back before they destroy the house and each other.
Cookie is on the verge of saying her first word, and ARPO is determined to capture it on camera for Mom and Dad. He tries a series of tactics to get Cookie to say it, but realizes he just has to be patient. When Cookie finally says her first word, it surprises everyone.