When Alex (Robert Sabin) and his virginal girlfriend Lori (Mary Huner) move into a New York City apartment, they fall victim to blood-thirsty supernatural forces that have horrifying plans for them. The apartment is haunted by the restless spirits of an occultist named Zachary and his fanatical followers who had committed mass suicide years before.

Seduced by a mysterious woman, Alex is gradually possessed by the diabolical Zachary. Only Lori can battle the putrid powers of darkness and save Alex’s soul when he transforms into a murdering, melting monster…a hideous slime-splattered demon that cannot be stopped.