Elba Island, summer 2004. Anna and Tamara are two young friends attending a summer music event. After the concert, invited to a party on a yacht, they are raped. Twenty years later, Tamara calls Anna and tells her she's caught one of the molesters, but when Anna arrives on the island, the man is dead. Who was it? The case is assigned to possibly an old acquaintance of Anna's, commissario Luca Bonnard, who focuses his suspicions on Tamara. But Anna fights to prove her friend's innocence, find the real killer, and find the other rapists.