Yoo Jimin (you), better known as Karina, begins high school feeling the ridicule of the popular group. Among a small group of girls who bother her, she will meet the popular Kim Minjeong, better known as Winter. From the first meeting between them, a great rivalry and a war without truce will break out. They hate each other's guts or at least that's what they thought

It had only been a month, for you, Minjeong and her friends were spoiled idiots, they were the popular ones in high school, it seemed they had everything, enough money, a good life, a handsome boyfriend, good grades, although Karina was without exception, the same girl who always arrived on a motorcycle, had a dark style, was tall and beautiful

Minjeong is walking down the hall with her friends, she was wearing a white skirt and a red sweatshirt, and she stopped dead when she saw a girl saw flirting with HER Karina, you were her secret girlfriend and the girl were flirting with you, she was really boiling with jealousy because finally and after all, she is popular and she had another boyfriend and you knew it but it was only for image, she didn't even like him, you was her everything, her girl