Paul, a former concert pianist, lives in the picturesque town of Krems with his adopted son Rico. Since the accidental death of his wife Anna, he has been living alone with his son. When Paul falls in love with the beautiful Luisa, he starts playing the piano again. What Paul doesn't know is that Luisa is Rico's biological mother and has already made friends with the little boy, without knowing that Paul is Rico's adoptive father. When Paul finds out, he feels betrayed by Luisa and confronts her...