 Ten years ago Wolf and Sabine Palfy got divorced. Since then their daughter Charlie grew up with her father and her twin sister Louise lived with her mother. They never knew anything about one another and thus only met by chance when they join a boarding school in Scotland. At first they cannot stand each other but after a while they start gathering information about their origin. Realizing their relationship they plan to bring their parents back together: Thus, Charlie visits her mother and pretends to be Louise, whereas her sister goes to the father pretending to be Charlie.