Kim Taehyung leads two parallel lives. In one, he is the clandestine psychologist of the mafia. In the other, a psychology professor at a university. Jeon Jungkook, too, lives a dual life. In one, he is the son of a powerful businessman and heir to a financial empire. In the other, a struggling student moonlighting as a bartender. Their lives intertwine and become entangled after they meet.