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Oobi, Uma and Kako become cape-wearing superheroes and assist people in need. They help a little girl fit a straw into her juice box and use a tuna fish sandwich to bring Mrs. Johnson's cat down from a tree branch (with Grampu's help, of course).
Grampu brings Oobi to the pier for a special day out. Oobi catches a fish after several unsuccessful attempts, but decides to let the fish go.
Maestru has trouble teaching Oobi and Kako how to sing in a choir without the boys goofing off.
Grampu decides to take Oobi and Uma to the peaceful state park after their quiet day is interrupted by the loud sounds of the neighborhood.
Oobi writes and illustrates his own storybook, titled "The Lost Umasaurus." The book stars a group of three dinosaurs - Oobi Rex, Umasaurus and Dino-Kako - who use teamwork to find their way to Grampusaurus' house.
Oobi and Angus go to the community center to perform at Inka's piano recital. Oobi messes up while playing "Twinkle, Twinkle, Little Star," and it's up to Kako to explain that mistakes are just part of life.
Grampu is going polka dancing with Inka, and hires a fun-loving babysitter named Randy to watch the kids. Uma has trouble trusting Randy at first, but they become friends soon after spending some time together.
Oobi, Uma and Kako decide to put on their own parade. They march down the street in costumes as Grampu, Angus and Mrs. Johnson cheer for them.
Oobi and Uma spend Valentine's Day trying to figure out who their mystery valentine could be. They follow a trail of valentines that leads to Grampu, dressed for the occasion in a red heart costume.
Grampu plans a date with Inka. When she arrives, Oobi and Kako become waiters and turn the house into an elegant French-style restaurant.
Oobi is playing catch with Grampu at the park when he comes across a baby and her mother, who teaches him how to take care of young children.
Oobi, Uma, Kako and Angus go to the park to perform in a musical version of "Little Red Riding Hood," accompanied by Maestru's piano-playing.
Uma attends her first day of preschool.
Oobi and Kako create miniature replicas of the neighborhood's buildings using cardboard boxes, paint and construction paper.
Frieda invites Oobi to play with her and a new friend, Frankie, at the park.
Oobi, Kako and Grampu take Uma on a trip through the house using cardboard vehicles.
Oobi is nervous when he must visit the doctor's office. However, Grampu helps him understand that there is nothing to be afraid of.
Kako is afraid to go trick-or-treating with his friends, for he has never done so before. Luckily, Uma decides to help Kako overcome his fears.
Oobi and Kako meet a deaf girl named Amy at the park. With the help of Amy's mother, the boys learn several words in sign language and are able to communicate with her.
Oobi learns that trying new things is a good thing when he visits Kako's house for dinner.
Uma and Kako help Oobi finish cleaning his room so that they can all play outside together.
Uma learns how to use chopsticks when Grampu takes the children to a Chinese restaurant.
The youngest has a nightmare.
Grampu teaches Oobi and Kako how to respect others' property when they visit the fruit store.
Uma tries to convince Oobi and Kako that being a kid is much more fun than being a grown-up.
Oobi, Uma and Kako star in their own home video, which Grampu films and edits.
Oobi has trouble finding an instrument when he decides to form a band with Uma and Kako.
The kids throw their own circus.
The kids look for rainbows.
Each of the kids creates their own masterpiece after seeing Grampu's painting.
Oobi forgets all about the playdate he scheduled with Kako after Grampu surprises him with a new pet turtle.
Oobi and Kako make it their duty to make Uma feel better when she catches a cold.
Oobi meets Frieda for the first time when Grampu takes him to the park.
Oobi and Kako are hesitant to ride a horse when they visit the petting zoo with Grampu.
Oobi and Kako begin to quarrel with each other over whose block tower is the best.
Oobi teaches Kako how to play tee-ball.
Uma feels left out when Oobi leaves for a sleepover at Kako's house.
Uma clucks like a chicken.
Oobi learns how to play the piano.
Grampu helps the kids plant a flower in the garden.
Oobi learns how to forgive others when Uma accidentally breaks his favorite toy car.
Oobi and Kako create costumes and a stage for their very own puppet show.
Grampu and the kids make their own homemade pizza.
The kids show their appreciation for Grampu.
Oobi must go to the barbershop after he wakes up with a head full of hair.
Oobi and Grampu try to convince Uma that asparagus is worth trying.
A big birthday party for Uma becomes too overwhelming for her.
The kids learn to take care of a young dog.
Oobi and Uma learn about practice when they attend a dance class for the first time.
Grampu wants Uma to take a bath after she covers herself with mud, but she refuses to comply with his request.
Uma learns how to be more careful at the playground after she falls off the swing.
The gang camps outside.