A year after its disappearance, the wrecked boat Arianna is found, with half the original passengers on board - along with a mysterious woman suffering from amnesia. But it seems that the survivors are harboring a terrible secret.

The castaways try to return to their lives, but it is difficult. During the prosecutor's questioning, the survivors' description sounds like a performance, a story that has been agreed on.

Returning to normal life for the survivors of the Arianna isn't easy. A year earlier, on board, everyone is dealing with the aftereffects of the storm, and doing whatever is possible to keep the hope of rescue alive.

The workers arrive at the shipyard, but they stop dead in their tracks, terrified: on the wall, at the entrance, written in huge blood-red letters: `MURDERERS'. When the clamour from the writing passes, Luca receives a video.

A huge cargo ship unloads a container that is brought to the shipyard: the wreck of the Arianna has come home. It is a poignant moment for the survivors who, one at a time, recover their personal belongings.

On board, the survivors continue to ration the provisions and get on with their day-to-day lives. Celebrating New Year's Eve with a mixture of melancholy and hope, Armando gets sick and some of them fear he was infected by Malika.