RAP MONSTER is known as a young CEO of a big company in South Korea. But that's not all from him. He is also a part of mafia world and one of the top leaders. With that, he has so many enemies. In which, his closet bodyguard sacrificed own life to save his, Rap Monster decided to take care of the only relative of his loyal bodyguard. SOOAH, in her final year of Nursing Care major, received a great pain and sorrow after losing her beloved older brother