Jimin is a mafia boss, everybody is afraid of him, he is very powerful, he has 3 companies, he is the most dangerous man in all of Korea. On the other hand, Guest is a sweet, talented, beautiful, Korean girl. Guest has an older brother, Namjoon. But Namjoon is a bad boy, he goes to the club every night and does not work at all, so he lives with Guest. Namjoon used to take money from Jimin and spend it all on parties.

After a few days, Jimin's men called Namjoon and said "Boss wants his money", Namjoon said "I don't have the money" and then hung up the phone.