Backstreet Rookie

In the past, Dae-Hyun is a good looking, down-on-his luck man whose girlfriend has just broken up with him while Saet-Byul is a strong, charismatic schoolgirl who is good at fighting.

Yeon-Joo, Dae-Hyun's girlfriend, sees him drinking with Saet-Byul and her friends. The police arrive accusing Dae-Hyun of selling cigarettes to a minor.

Yeon-Joo's jealousy grows as she learns that Saet-Byul, the part timer Dae-Hyun hired, is good looking from a coworker. Angry with rude customers, Saet-Byul gets into a fight with them and is seen by Dal-Shik, Dae-Hyun's best friend.

Dae-Hyun misunderstood the situation between Yeon-Joo and Saet-Byul in the bathroom. Saet-Byul runs into the celebrity, and her old friend, Kang Ji-Wook, who her father used to train.

Though Yeon-Joo is jealous when she witnesses Saet-Byul getting a piggyback ride from Dae-Hyun, she still invites her out to eat with them.

Saet-Byul is attacked in retaliation. Dae-Hyun is close by and rushes to her aid. Despite that, Saet-Byul is fine but needs surgery for her appendicitis.