Alfredo, a young Italian student, is cycling through the streets of a foreign city when he is caught in a thunderstorm. Seeking shelter, he is attracted by the strange call emanating from a porn cinema that seems to have emerged from another time. Guided by his fantasies, he finds himself trapped in a perverse game: an assassin eliminates the cinema’s locked-in customers one by one. Soon, he’s the only one left in the theater, a fragile moth caught in the web of a giant spider.