Jaehyun is actually the head of the mafia and Jeno is his son who is definitely following his path. Jaehyun has never been married, Jeno also hasn't had a girlfriend. They are both nicknamed 'the pillar duo of life', because they have something in common. Both are handsome, cold, rich, mysterious, and have a lot of power and both are still single. Until one day they meet someone who makes them compete for him, they are familiar and absurd. But their struggle is no joke.