Giuseppe, a Sicilian fisherman, and Yousef, an exiled Tunisian, share a friendship, a fishing business and "Medea," the vessel on which they ply their trade. Then, while they are at sea, the fears of the post-9/11 world shatter their idyllic relationship. Giuseppe hears a radio broadcast about a wanted terrorist with Yousef's name. The Italian locks his friend in the hold. But when Yousef escapes, the former friends' boat becomes their battleground.