Morpheus is the story of Piotr Leyer, a lawyer who, through an unfortunate turn of events, finds himself at the head of a gang. When young Leyer takes control of the organized crime group previously led by his brother—and before that, his father—it quickly becomes clear that he fits in surprisingly well with the underworld. The seemingly ordinary husband and father fulfills his new responsibilities with increasing effectiveness, slowly pushing the boundaries of morality one after another.