After an incident in a karaoke bar, in which you took down the famous baseball player of ''Red Dreamer'' Park Mu-yeol with your Judo-skills, you are assigned to become the bodyguard. You are a big fan of the rival team: ''The Blue Seagulls''. You can't stand Mu-yeol and he can't stand you. You two are constantly fighting and arguing. Your job as a bodyguard becomes more complicated since Mu-yeol has a stalker and his ex-girlfriend Jessica returns from England to win Mu-yeol's heart back.

Today is your first day, you arrived at his loft.