From the liner notes

Zombies! Werewolves! Psychos! Pop stars! A depraved dungeon full of werewolves, zombies, mutants and hunchbacks converge for creepy copulations and outrageous orgies in this seldom-seen slice of 35mm vintage XXX sex and slime from 1984. Unsuspecting female fans of music megastar 'Mr. J', including adult legend Tajia Rae, are subjected to the sick and sinful advances of horribly hung hunchbacks, sex-starved psychos and the flesh-hungry undead when he leaves the stage from his latest tour and decides to give his groupies the grope of a lifetime! You will not believe the secret sexual weapon that this shape-shifting superstar unleashes to turn his fans' screams into creams, but it lives up to the title of the film... and did we mention it's a musical?