Oobi, Kako, and Uma play Old MacDonald and pretend to be farm animals. Uma won't stop pretending to be a chicken until she finally comes face to face with a real live chicken. She decides she would rather be Uma after all. — ABC Television
Oobi, Uma, and Kako are in the backyard listening to "Old MacDonald Had a Farm" on their tape player. Oobi gets the idea to play an animal game. Oobi dresses as a sheep and Kako dresses as a pig. Uma decides that she wants to be a chicken. At first, she confuses a chicken with a dog and barks. Oobi reminds her that only dogs bark and she begins clucking like a chicken. Grampu calls the children inside for lunch. Although the game ends, Uma continues to act like a chicken. Uma refuses to eat the sandwich Grampu has prepared for her, despite how she normally loves peanut butter and jelly. She tells Grampu that she will only eat what chickens eat.
Grampu decides to play along and gives her a bowl of sunflower seeds. She ends up disliking the taste of the seeds. Grampu gives her another sandwich, which she chooses to peck at. Later, Oobi and Kako play catch with a baseball and are interrupted by Uma. They tell her that they are playing a new game and ask if she wants to join. She declines and sits on the ball instead. She gets up, claiming that she laid an egg. The boys ask her to play hide-and-seek and she declines their offer again. Uma hears a real chicken cluck and finds a real chicken. She asks the chicken to play, but it does not respond to any of her questions. She decides that chickens are not as interesting as she had thought.
Oobi and Kako are playing tag in the field when Uma appears. She tells them that she is not pretending to be a chicken anymore. She joins their game as an interview segment begins. It involves Kako asking the viewers if they like to play pretend. Afterwards, Oobi gets the idea to play a guessing game with Uma. He draws a chicken and asks Uma to guess what it is. Grampu walks in with a chicken costume and pretends to peck at Uma as the episode ends.