Oobi rides down a slide with Uma at the playground.
Oobi, Uma, and Kako play a game of follow the leader. Oobi is the leader, and Kako copies all of his moves perfectly. However, Uma does them backwards each time. The boys decide to let Uma be the leader so she can make up her own moves.
Oobi and Kako play a game of catch with an imaginary ball.
Oobi, Uma and Kako play "peekaboo" by covering and uncovering one another.
Oobi, Uma and Kako play a game of tag.
Grampu turns on a radio and the children dance to the music.
Oobi shares his pretzels with Uma and Kako.
Uma discovers the taste of watermelon and loves it so much that she tries to eat one whole.
Oobi and Kako make soup for Uma. She thinks the soup is too hot at first, so Oobi and Kako help cool it down. Soon the soup is very cold, but Uma likes it that way.
Oobi wants to put some ketchup on his hot dog, but he has trouble getting it out of the bottle. After Kako helps out, they end up drenching the hot dog in ketchup.
Oobi and Uma show the difference between empty and full by drinking orange juice out of a tiny cup and a huge pitcher.
Grampu is making a bowl of popcorn for Oobi and Kako. While they wait, the boys pretend to be popcorn by popping up and down.
Uma finds a worm in the garden. Kako shows her that it is safe to touch it.
Oobi, Uma and Kako go apple picking and use teamwork to reach an apple.
Oobi and Kako pretend to be the wind.
Oobi and Uma dig in the garden.
Oobi hides behind a sunflower during a game of hide and seek with Uma.
Grampu tries to explain what nature is to Uma.
Oobi and Kako make music by turning a soup can and a bottle into makeshift instruments. Uma joins in by singing along to their rhythm.
Oobi and Kako play a guitar.
Grampu teaches Uma how to play bongo drums.
Uma's loud music interrupts Oobi's reading.
Uma wants to join when Oobi and Kako pass time by clapping their palms together.
Uma poses for Oobi while he uses finger paints to draw a portrait of her.
Oobi, Uma and Kako put on a fashion show with macaroni jewelry.
Oobi and Kako use sponges to make paintings.
Oobi and Uma make a pinch pot out of clay.
Grampu draws a rabbit and asks Oobi to guess what it is.
Oobi makes a model of a neighborhood out of cardboard boxes and paint. He gives Uma a tour of the different buildings, and he helps her sound out the words "library" and "neighborhood."
Oobi and Kako try to open a tube of toothpaste and end up making a mess with it.
Grampu uses a big blue towel to dry Uma after her bath. After jumping in and out of the bathtub a few times, Uma decides to splash Grampu and then dries him off.
Oobi and Kako take a bubble bath. They use bubbles to pretend to be different creatures.
Oobi plays a game by acting out emotions and inviting the viewers to join him. Uma imitates Oobi's moves behind his back. After the game, she decides to act out the feeling of surprise by jumping and scaring Oobi.
After playing outside in the mud, Oobi and Kako run inside and spot a cake on the counter. Before they can eat it, Grampu tells them to wash up in the sink, so they work together to wash their hands.
Uma thinks the sound of a toilet flushing is hilarious, so she wants to hear it flush over and over again. When Grampu asks her to stop, they play a game where they imitate a flush by moving their thumbs up and down.
Oobi and Kako play with a water sprinkler in the backyard. When it keeps turning on and off, they try to figure out why it won't run normally. They find out that Uma has been spinning the faucet handle like a race car, messing with the water unintentionally.
Uma builds a sand castle. She names Grampu the king of the castle, then names Oobi the prince. When they ask her if she wants to be a queen or a princess, she says she would rather just be a builder.
Oobi and Uma use a bubble wand to blow bubbles outside. They let Kako have a turn, but instead of blowing bubbles, he tries to take a bath in their bubble soap.
Oobi and Uma want to have a tea party, but they forget to bring out their teapot. Determined not to let their day go to waste, they decide to sing the song "I'm a Little Teapot".
Oobi and Uma eat ice cream.
Oobi and Kako play pretend at a big red pool.
Oobi and Kako play a guessing game. Oobi hides a turtle in a terrarium, then asks Kako to guess what is inside. He gives a few clues: legs, green, tail, and shell. Kako makes a few incorrect guesses but realizes that it has to be a turtle. Oobi uncovers the turtle and they play with it.
Uma tries to get a canary to sing with her.
Oobi and Kako take turns using a feather to play with a cat. Grampu asks for a turn and acts like a cat trying to grab the feather.
Oobi pretends to be a puppy.
Kako brings Oobi a box of animal cookies. They look at the different shapes and imitate the animals they see. When Kako mimics a pig, he oinks and eats all of the cookies, leaving none for Oobi.
Oobi and Kako sing the "Itsy Bitsy Spider" song.
Uma tries to have fun with her stuffed rabbit, but she is bored. Oobi cheers her up by chasing her rabbit with his toy lizard.
Grampu and the kids camp outside.
Oobi teaches Uma how to be careful at the playground.
Uma refuses to take a bath after playing in the mud.
Oobi and Uma attend a dance class.
Kako asks Oobi to take care of his puppy.
Uma feels overwhelmed on her birthday.
Oobi and Grampu try to get Uma to try asparagus.
Oobi wakes up with a head full of hair.
Oobi, Uma and Kako create a holiday for Grampu.
Grampu teaches the kids how to make pizza.
Oobi and Kako put on a puppet show.
Uma accidentally breaks Oobi's favorite toy car.
Grampu teaches the kids how flowers grow and gives them a seed to plant.
Inka gives Oobi his first piano lesson, and teaches him how to play "Do-Re-Mi."
Uma pretends to be a chicken.
Uma misses Oobi when he visits Kako's house for a sleepover.
Kako becomes frustrated with tee-ball and refuses to play.
Oobi and Kako build forts out of blocks and argue over whose is better.
Grampu takes Oobi and Kako to the petting zoo.
Oobi meets Frieda at the park.
Uma comes down with a fever.
Oobi forgets about Kako and the playdate they had planned when Grampu gives him a pet turtle.
The kids decide to make art together after seeing Grampu's painting.
Oobi and Kako reluctantly join Uma to find a rainbow after the rain spoils their plans.
Oobi, Uma and Kako use their imaginations to create their own pretend circus.
The kids form their own band and try to find makeshift instruments.
Grampu shows Oobi and Uma how to film and edit a home video.
Oobi, Uma and Kako pretend to be grown-up firefighters, musicians and businesspeople.
Oobi and Kako learn to respect other people's property when Grampu takes them to the supermarket.
Grampu helps Uma turn her nightmare into a silly dream.
Grampu takes the children to a Chinese restaurant, where Uma learns how to use chopsticks.
The kids work together to clean up Oobi's room.
Oobi learns that trying new things is good when he visits Kako's house for dinner.
Oobi and Kako meet a deaf girl named Amy at the park.
Uma goes trick-or-treating for the first time.
Oobi visits his pediatrician's office for a checkup.
Oobi, Kako and Grampu take Uma on a pretend trip throughout the house.
Frieda invites Oobi to play with her and another foot named Frankie at the park.
Oobi and Kako build a replica of their neighborhood out of boxes and paint.
Uma does not want Grampu to leave on her first day of preschool.
Maestru directs a musical performance of "Little Red Riding Hood," staged in the park.
Oobi meets a baby named Sophie and her mother, Sheila, at the park.
Grampu prepares a special dinner of spaghetti and meatballs for his date with Inka.
Oobi and Uma follow a trail of paper hearts to find their mystery valentine.
The kids put on their own parade after seeing a parade poster.
Grampu and Inka go out polka dancing, and leave a playful babysitter named Randy in charge of the kids.
Oobi and Angus perform at a piano recital.
Oobi writes a storybook called "The Lost Umasaurus," in which dinosaurs named Oobi-Rex and Dino-Kako help Umasaurus find her way home.
Grampu takes the kids on a nature walk at the state park.
Oobi and Kako decide to join Maestru's singing group after hearing a song called "Yo To Ho!"
Grampu takes Oobi fishing.
The kids pretend to be superheroes and save Mrs. Johnson's cat.
