This movie tells the story of a manhwa artist Ji-woo (played by Sung Joon) who visited an abandoned apartment called Gwanglim Mansion in search to find out the paranormal activities that happened there, opening up a whole new realistic horror story....

Kim So-Hyun, Nam Ju Hyuk and a member of BTOB, Yuk Seong Jae were chosen as new stars of next generation who can start a school craze and the leading roles of the 6th drama of KBS’s unbeaten myth, “School” series. This drama tells a school story, the heroine tried to commit suicide due to her classmate’s malicious bullying, but ended up losing memory. Accidently, she inherited the identity of her twin sister and started to search for the truth....