Four girls from four different parts of Denmark have been invited to apply to Rosenholm Academy for an unknown reason. During the unorthodox application tests, it becomes apparent this is no ordinary school. In fact, it's a magical boarding school and all the students have powers.

Once the school year begins, they learn that Rosenholm carries a dark secret—a young girl was murdered under mysterious circumstances in the 1980s and the killer was never found. Her spirit is still haunting the place, and she is now urging the four girls to bring justice and find the killer. But helping the spirit puts all of the girls in grave danger . . .