Son Chaeyoung is a girl who lives in the street with nothing but pain. Meanwhile, Myoui Mina is a rich and perfect girl with no problems.

One day, Mina meets her in the alleyway, unconscious. Although Mina is a brat, she realized that she has a soft spot for the girl.

Chaeyoung got beaten up by a group of boys who forced to her and took all her stuff, her vision blurred as she saw a petite figure running towards before her turned into darkness.

Mina denies that she's in love with Chaeyoung. She has Jihyo for Pete's sake! But, Chaeyoung is too oblivious to find out.