Backstreet Rookie

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.

Choi Dae Hyun tells his girlfriend Yoo Yeon Joo that an emergency has come up at the convenience store and he must go. She wonders why he's leaving for an issue with a part-timer.

Yeon-Joo's jealousy grows as she learns from a coworker that Saet-Byul, the part timer Dae-Hyun hired, is good looking. 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 misunderstands a 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. Luckily, Saet-Byul is fine but still needs surgery for her appendicitis.