郑汉景（李清娥饰）在父母离婚后一直跟着父亲在韩国的一个小城市生活。高中时期，汉景的父亲因病去世，只能投奔在首尔的母亲，并转到那里的高中念书。汉景刚刚安顿下来，就得知自己的男友和闺蜜竟然搞到了一起。汉景的妹妹多琳（郑多惠饰）为了让姐姐振作起来，要把学校的校草班海沅（赵汉善饰）介绍给她。汉景却无心恋爱，为了避免见面尴尬，她躲到了游戏厅，在这里她遇到高大帅气的郑泰成（姜栋元饰）。郑泰成和班海沅都是学校的风云人物，却都视对方为死敌，这两人又都对汉景一见钟情。因此两人的矛盾升级，为了争夺汉景，两大校草发生了不少争执。海沅性格霸道，但是面对汉景时却一片柔情，而泰成虽然带点孩子气，但对爱情却非常认真，面对这两个喜欢自己的大男孩，汉景陷入两难，尽量平衡他们之间的关系，不伤害任何一方。

Jung Han-kyung (played by Lee Cheong-ah) has been living with his father in a small city in South Korea after his parents divorced. During high school, Han Kyung's father died of illness, so he had to go to his mother in Seoul and transfer to high school there. As soon as Han Jing settled down, he learned that his boyfriend and best friend had gotten together. Han Kyung's younger sister Doreen (Jung Da Hye) wants to cheer up her sister by introducing Hae Won (Jo Han Sun), a grass class at the school, to her. Han Jing has no intention of falling in love. In order to avoid the embarrassment of meeting, she hides in the game hall, where she meets the tall and handsome Zheng Taicheng (played by Jiang Dongyuan). Zheng Taicheng and Ban Haiyuan are both influential figures in the school, but they both regard each other as sworn enemies, and they both fell in love with Han Jing at first sight. As a result, the conflict between the two escalated. In order to compete for Hanjing, the two major school grass had many disputes. Hae-won has a domineering personality, but he is tender when facing Han Kyung, while Tae-sung is a bit childish, but he is very serious about love. Facing these two big boys who like him, Han Kyung is caught in a dilemma and tries to balance them. relationship without harming either party