| Director | Chang |
|---|---|
| Box office | $9.2 million |
A group of 20 high school students partake in an elite class to prepare for a college exam. Among them are the rebellious Kang I-na, her best friend Yoon Myong-heo, and the class clown Kang Hyun, who harbors an affection for I-na. A few days after incidents involving a student, Beom sees a ghost haunt his paper, and class teacher Hwang Chang-wook discovers scars on his hand.