As part of her initiation, as a new arrival at boarding school, Alison has to accept a dare. Unfortunately, her dare requires her to go into the dreaded room thirteen on the anniversary of Lily's death. It is rumoured, Lily, the girl who used to reside in the room killed herself on the thirteenth of February, the day before Valentine's Day. When Alison goes into room thirteen, alone and afraid, armed with only an Ouija Board, the dead girl gives her a riddle, which leads Alison on a journey to discover what really happened to Lily. What dark secret is the girl in room thirteen hiding?