Welcome to Tromaville, a small American town which is being terrorized by criminals while the towns Mayor sits idly by.
Among the residents of Tromaville is Melvin, a wimp of a young man and a janitor at the local health club. He is forever teased and tormented by the strong, beautiful men and women of the club as he goes about his daily menial tasks.
A particularly nasty group of Melvin's tormentors devise a plot to ridicule him in front of the whole town. BUT, the 'harmless' pranks turns into a horrible accident as Melvin crashes through a third story window and lands in a vat of hazardous toxic chemicals. The rest, as they say, is history! As the toxic chemicals take hold of Melvin's body, a strange transformation begins to take place. Melvin the weakling turns into a huge, hulking 'Toxic Avenger' - the first superhero in New Jersey!
The excitement is non-stop as this monstrous mess of mutated man sets out to single-handedly wipe out the forces of evil which contaminates the town of Tromaville.