Adam Bell is one of the main characters of the movie. He’s a disheveled, glum history professor. The truth is that he doesn’t seem to be interested in anything, even in his beautiful girlfriend Mary. His life doesn’t interest him – every day is just like the previous one, nothing exciting, nothing special. One of his colleagues recommended Adam to attend an erotic show at an underground club. The show is very unusual; it culminates in a completely naked woman crushing a tarantula with her foot. In the meantime a pregnant woman sits on a bed alone. While watching this show Adam notices a guy, who looks exactly like him – a complete double. It is a bit-part actor named Anthony Clair. Adam has mixed feelings about it and eventually decides to track him down. The two men meet and their lives turn upside down. They are absolutely identical in their appearance and since the moment they meet their lives become irrevocably and bizarrely intertwined. They realize that they are literally copies of each other, seeing as their scars are identical too. But their characters are contrary – Adam is bookish and reserved, while Anthony is sexual and aggressive.