Yeh, a gifted student, transfers to Edison Junior High, a private school renowned for its academic performance. Disturbed by the gloomy atmosphere and distorted institutions, the rebellious Yeh begins to challenge everything he sees and feels. Little does he know that he is slowly falling into the treacherous trap of the mysterious "Dorm 420".
| Actor | Role |
|---|---|
 Nikki HsiehChou Ya-ting | Chou Ya-ting |
 Tien NiuPrinciple - Fang Yuan | Principle - Fang Yuan |
 Huang Tsai-yiMs. Cheng I-Chen | Ms. Cheng I-Chen |
 Chen Yi-wenDorm Master - Fang Tzu-kang | Dorm Master - Fang Tzu-kang |
 Duan Chun-haoYeh Chun's Father | Yeh Chun's Father |
 Ina TsaiYeh Chun's Mother | Yeh Chun's Mother |
| DDavid Chang Hsun-WeiLin Shih-wen's Father | Lin Shih-wen's Father |
 Wang Shih-chaoLin Shih-wen | Lin Shih-wen |