When Buzz captures a fly to enter in The Amazing Pet Show, his parents and the judges tell him that a fly cannot be a pet, but Fly Guy proves them wrong.

When Buzz and Liz visit the zoo, their pets Fly Guy and Fly Girl go looking for food, and find the Creatures of the Night exhibit, where they see animals that would like to eat them.

Fly Guy has learned a lot of new tricks, but when he shows off at dinner time he and Buzz get into trouble--though later they prove useful.

When Fly Guy meets Fly Girl, he is amazed and smitten.

Buzz has a nightmare that his best friend Fly Guy has created a gigantic Frankenfly monster.

Buzz creates a comic book that features Buzz Boy and Fly Guy as the superheroes.

While playing hide-and-seek with Buzz, Fly Guy is taken away by a garbage man.

Fly Guy misses his family, so Buzz invites them to a surprise party and his mother, father, and thousands of brothers and cousins show up--Fly Guy is delighted but Buzz's parents are not pleased.

While riding in the car with Buzz and his father, Fly Guy gets blown out of the window and finds himself riding in a truck, then a boat, a train, an airplane, and maybe even a rocket.

Buzz is writing a fairy tale for homework, and Fly Guy naturally assumes the role of a handsome prince, who fends off a giant and rescues a beautiful princess.