Daean School is a school of hope; however, in reality, its actually a place of despair where the students are treated like garbage. It's unbelievable but true. The teachers of Daean School are drowned in desire to an extent that they step on the students' dreams.

Since 2 years ago, Haneul has been teased by Chiwoo who is a delinquent in his school. In the opening day of third grade, Haneul meets his middle school friend Myeongho who was moved from other high school. From that time, his school life had changed. He gets close with new friends, goes out with a girlfriend, draws cartoons, and enjoys summer time. While he enjoys a new happy life, things are suddenly getting wrong. Chiwoo prepares revenge on Myeongho and Haneul’s other friend Minsik who falls in love with Myeongho’s girlfriend. They provoke Hanuel into a fight because he is an easy mark.

En route to his hometown of Incheon to receive an award for his book about Mil-wol Island, where people have been known to vanish, author Dong-jo accidentally loses his bag. Needing to borrow money, he reconnects with some old classmates including his former sweetheart, Yoo-jin. Dong-jo is all smiles during his reunion until Ki-jung appears, and upon seeing him, painful memories flood Dong-jo’s mind. Not only was Ki-jung the cause of Dong-jo’s greatest childhood trauma, but he is also the biggest inspiration behind his new novel. Fate has apparently decided that now is the time for Dong-jo to fully confront his dark past.