Luca understands that he didn't go through hell to give up his family so easily and goes home. Meanwhile, Anita, at the umpteenth dead end she runs into, begins to wonder if hers isn't really just an obsession. Maybe the survivors really are as innocent as they say. But, just that night, the wreck of the Arianna returns to Genoa. Meanwhile, on the Ariadne, the survivors must face the danger of contagion.