Seunghyun, the son of the Police Chief, gets in conflict with seniors from the training corps.
Seunghyun is stunned to encounter Eunkang, a girl he previously had a complicated relationship with. In addition, Eunkang has been accused of secretly filming the Cheongram training and has to leave school.
Eunkang's roommate, Hanna, turns out to be the culprit of the hidden camera prank and almost expelled. However, she threatens to expose the video if she has to leave, sending ripples throughout the whole school.
After finding out that his first love, Juchan, has a girlfriend, Eunkang loses interest in campus life. Eunghyun feels disappointed with Eunkang when she reveals that she is thinking about dropping out regardless of whether she wants to be a cop.
Eunkang goes out on a blind date. Meanwhile, Seunghyun becomes short-tempered after Bumju reveals that Eukang may be seeing other people behind his back, despite Seunghyun's failure to commit.
Students are studying hard for the midterm. Seunghyun witnesses Hyunseok cheating during the exam. However, when Seunghyun threatens to reveal Hyunseok's subterfuge. Hyunseok reveals his own blackmail.
Kang Daniel
Wi Seung Hyun
Chae Soo-bin
Go Eun Gang
Park Yoo-na
Ki Han Na
Min Do-hee
Woo Joo Young
Lee Shin-young
Kim Tak