From failing at job interviews, to being a 30-year-old virgin, Gu Chang seriously can't catch a break. But that all changes when he fulfills Ah Ni, a lovely as well as innocent woman that makes Gu Chang assume his luck has finally turned right-- until her split personality Ha Ni rudely arises throughout their first kiss. Between Ah Ni's pleasant absolutely nothings as well as Ha Ni's violent high kicks, can Gu Chang deal with 2 partners simultaneously?