Two new students, math genius Felix and diplomat son Leo, start to study at school.

Sara and her friend Therese start to tell them of the local legend, Strandvaskaren (the Drowning Ghost).

A century ago a farmer slaughtered three male students at the school before drowning himself in the nearby lake.

Sara finds out that the farmer killed the students to avenge the rape and murder of his daughter, but it was all covered up by the authorities because the rapists were upper class.

During the graduation day eight months after the events, with all parents and friends of the many students present, Sara looks out over the sea of people and suddenly sees a sign with the words written in red paint "My beloved sister Rebecka".

The film ends with Sara realizing that even though she cannot see him in the crowd Felix is still alive and amongst the people watching her and her classmates graduate.

The film was shot at Filmhusateljéerna, Filmhuset in the Svenska Filminstitutet in Gärdet, Stockholm, Sweden.

and referred to "The fact that Anders Ehlin's music in the film's opening is a plagiarism of John Carpenter's famous piano loop in Halloween makes it painfully direct.

"[3] Strandvaskaren won awards for best director and best soundtrack of the year at the Screamfest Los Angeles Horror Film Festival.