Keith Gordy goes to the boarding school Blackwood, as her mother was unable to cope with the temperament of her daughter. Along with the heroine there are 4 more girls. Spoiled teenagers immediately feel the strict rules of the school, which set the director, Madame Duret. Almost getting used to the new place, the girls suddenly start to notice that something sinister and mysterious is happening here. Realizing that their lives depend on this, the heroines decide to solve this riddle.