Agent 101 [a.k.a. Park Bom] is a spy working for Club D’Assassinat, the world’s most dangerous secret organisation. Having admitted into the organisation since she was young, Park Bom is indeed a skilful agent, not only a Martial Arts Master, but also a Master of Disguise. One day, she is ordered to work as a Secretary for Choi Seunghyun, the President of Korea’s Largest Company, with a mission to seduce him. But what happens when fate starts to get in the way? What happens once Park Bom starts to feel something going on with her heart?