Conraud, a retired police officer, unwittingly becomes embroiled in an old unsolved murder case when he is contacted by an elderly couple about the disappearance of their granddaughter Danni. Meanwhile, Conraud investigates the case of his father, who was murdered under mysterious circumstances. He comes into contact with the daughter of his father's close friend, Aiglow, who turns out to be a medium. She is haunted by visions of a little girl, Nanna, who drowned in Lake Tjodnin decades ago. Conraud becomes interested in the girls' fates, and it is while searching for Danni that he realizes that there is a strange connection between their deaths. Digging into the past, he reveals more and more secrets that he never expected to discover... But is he ready to face the shocking secret that has haunted him for many years?