Whispering Corridors: The Humming

Strange things happen in the closed toilets of Eunhee's old school, where she was deputy head girl. Hayeong and Soyeon, who used the place as their hideout, believed there was a ghost there after they heard a humming sound echoing in
After being appointed as the vice-principal of her alma mater, Eun-hee becomes plagued by hallucinations. Branded a troublemaker by the teachers, Ha-young hears strange sounds coming from the school's dilapidated restroom.