When fourth-grader Eugene, a small and nerdy, mild-mannered housefly, becomes the world's smallest superhero, he takes on Crazy Cockroach and his army of insect baddies.

Super Fly and Fantastic Flea have always fought the bad guys together, but Crazy Cockroach's latest plan to take over the world involves turning Super Fly's loyal sidekick, Fantastic Flea, against him.