It's summer, Davide, Fabio and Cory leave for a quiet sailing holiday heading to Greece, to accompany their Greek friend Efi who is to get married in Patmos. Traveling is a nice excuse to have a last vacation together before the wedding. Not yet on the high seas, they find themselves forced to take on board Giò, a mysterious castaway who will overwhelm their destiny. As if this were not enough, the boat's engine breaks down and the four boys, with Giò on board, are forced to return to the coast. Once on dry land, Giò will involve them in daring undertakings to regain the custody of their daughter, amidst all kinds of misunderstandings, unlikely characters and drugs, while death is lurking and with it disturbing returns from the afterlife ...