Vetis, the world's first demon, seeks a human body to possess in order to spread darkness and evil upon a rapidly brightening world, but he cannot do it alone. He must have the help of a rival demon and his human sorceress in order to be successful. With his cohorts all on the same page, Vetis begins his quest by damning the first humans created by god. One generation later, Vetis' human body is ready, but the man isn't quite corrupt enough to possess. In order to get him to the required level of corruptness, he needs Lilith to convince the man to lay with his sister and kill his brother. Only then will the man's soul be black enough to possess.