Whispering Corridors: The Humming

synopsis

Eun-hee is hired as a vice principal at her old high school, where strange things take place in the closed down washroom. Students Ha-young and So-yeon, who use 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 hallucinatiosn 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.