When the residents of a luxury apartment complex outside Montreal are infiltrated by parasites and transformed into violent, sex-crazed maniacs, it's up to Dr. Roger St. Luc to contain the outbreak from spreading to the city.
Tom, an amoral Montreal drifter who supports himself by peddling dope and fleecing lonely woman, hooks up with Vicky, a straight-laced librarian, and initiates her, all too well, into his criminal ways.
In this satire of sexuality in the entertainment industry and voyeurism, a woman maintains 3 romantic relationships simultaneously: with her husband, with her boss, and with her lover.