A boy takes his two pets-a dog and a frog-to the park. While the boy is busy chasing his dog, the frog takes the opportunity to hop out of its basket and explore. Its first adventure is a ride in a toy truck that's being pulled by a little girl. The boy and dog hunt for the frog. Meanwhile, the frog joins the act of a street magician, hides in a picnic basket, takes a ride in a toy motorboat, and jumps into a baby's carriage. The baby's mother summons the park police, but the boy and dog rescue their amphibian friend just in time. Based on a book by Mercer Mayer.