A day at the park with Grampu becomes very special for Oobi when he meets a five-year-old girl named Frieda who looks very different from him. Oobi learns that differences are good and new friends come in many shapes and sizes. — ABC Television (source)
Oobi and Grampu are at the park. They carry a tennis ball and a picnic basket over to a table, where they plan to have lunch. Oobi says that he's waiting for Kako. While he waits, he bounces the tennis ball on the table. As Grampu starts setting up a picnic, Oobi tells him that he's bored. Grampu spots a girl sitting by herself—a foot puppet—and asks Oobi if he wants to meet her. Oobi says no and explains that he's too nervous to meet someone who looks so different. He decides to play alone. However, the foot says "hi" to him and introduces herself as Frieda. Oobi greets Frieda and tells her his name.
Frieda asks Oobi to play with her. She wants to play kickball with a dodgeball, but Oobi discovers that he can't kick it. Oobi suggests playing catch with his tennis ball instead, but Frieda can't catch the ball. After taking a moment to think, Oobi tries awkwardly to start a conversation. "Sky," he says. "Blue," Frieda replies. Grampu calls Oobi over to the picnic table for lunch. Oobi says goodbye to Frieda and takes his tennis ball with him.
Over at the picnic table, Grampu gives Oobi a sandwich and asks him about Frieda. Oobi explains that they couldn't have any fun since they couldn't play the same games. Grampu tells Oobi that differences are good. He points to Oobi's sandwich and says that although peanut butter and jelly are different, they taste great together. He then points to an interracial couple walking through the park. He explains to Oobi that differences are the spice of life. Oobi decides to play with Frieda again. They make up a game called "kick-catch," which combines kickball and catch. They cheer and realize that they can play together after all.
Oobi asks Frieda to give him a "high-five," but she can't do it. He then suggests a "low-five" instead, which works out. They keep playing as the interview segments start. During them, Oobi asks preschoolers about their friends. Afterwards, Kako finally arrives and joins Oobi to play a counting game with the number 5. The episode ends with Oobi finishing the game.