Release Date: 17 June 2021 in Singapore
Director: Lee Mi-Young
Cast: Kim Seo-Hyung, Kim Hyeon-soo, Choi Ri
Genre: Horror, Mystery
Ha-young heard humming in the empty washroom, and believe that Eun-hee, who is hired as a vice-principal of the school is somehow linked to the mystery.
Eun-hee is hired as a vice principal at her old high school, where strange things take place in the closed-down washroom. High school students Ha-young and So-yeon, who used the washroom as their hideout heard humming in the empty washroom, and believe that a ghost exists inside. They discover a nametag in the washroom and suspect that Eun-hee is somehow linked to the mystery. Suffering from hallucination upon her inauguration, Eun-hee finds a ghastly figured girl in the washroom mirror and begins to believe that the girl was the one who brought her back to this school…