Near a picturesque wine town on the Middle Rhine, the skeleton of a young woman is found. Is it the 19-year-old Mary Lou who disappeared in 1984? According to the police, she had run away from home at that time. There were enough reasons for her to do so: her father, who made her life a living hell. Or winemaker's son Rudolf Freyung, with whom she was pregnant and whom she desperately wanted to marry. Will the mystery of her disappearance finally be solved?.