When Buzz, his parents, and his pet fly go on a road trip and get lost, Fly Guy comes to the rescue to help them find their way home.

When Fly Guy snacks from a radioactive trash can, he grows until he is fifty feet tall--and Buzz has to find out a way to counteract the effect before the army attacks his pet.

After accidentally swallowing her grandson's pet fly, Grandma tries to retrieve it by consuming progressively larger animals.

It is Christmas Eve and Fly Guy realizes that he does not have a present to give to his best friend Buzz--but when he looks around the house searching for something suitable he discovers a stranger in a red suit, and decides to attack with some ninja moves.

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.