In a town of mortals, monsters are living among them. Vampires and werewolves are trying to blend in with your everyday human being. But one monster isn't like them. Y/N Park, a were-pire, is trying to make some friends, but that is hard being the strongest and most dangerous monster. When your best friend Nishumara Riki/Niki leaves for Japan, it's back to being alone. Or so you thought. Because when you come form a family of monster mafias, you make some mafia friends, and possibly, a few romantic relationships.