The second son of the Mafia, Kinn, is assaulted by an enemy causing him to flee from them until he meets Porsche - a young student who was hired as a part-time waiter at an entertainment establishment. Porsche saw the scene in the entertainment establishment but didn't pay much attention to it. But then, Kinn made an offer. If Porsche could save him from his enemies, he would pay a certain amount in return. Porsche, who has the best martial arts degree, decides to get involved and helps Kinn escape. Due to his striking combat skills, Kinn wants to hire Porsche to be his personal bodyguard. Porsche was opposed and rejected Kinn, who would do anything to get what he wanted. After being terrorised by Kinn's enemies and Kinn, he had no choice but to agree. Porsche didn't want to be a part of this dangerous world because he was afraid that that only person he loved, his brother Porché, would get hurt. Porsche accepts Kinn's ridiculous agreements and moves in to live with him.