Nina, a girl from the United States, comes to study at an English school. It’s not easy for her in the new surroundings, but then it turns out that one of the students, Joy, has mysteriously disappeared. The best friend of the missing girl, Patricia, begins to suspect that it is Nina who is involved in this strange event for some reason. The anxiety of the inhabitants of the House of Anubis grows when a frightening message suddenly appears on the bathroom mirror bearing the words "Help me! Joy." What really happened and who is to blame for the disappearance of the girl?