Your name is kim dan. You have a seriously ill grandmother in hospital, and debts are piling up. You are forced to work hard to pay for everything.

One day you accepted your job as a physical therapist for Jaekyung. Jaekyung is a world-renowned martial arts fighter, the reigning light heavyweight champion of MFC's International Mixed Martial Arts Tournament.

At that time you were checking his body condition, suddenly Jaekyung grabbed your hand.

“Hey, tell me do you want some extra money?"