During World War II, convicts are recruited by the Allies for an extremely hazardous mission.

In a small seaside town in the middle of tourist season, an old eccentric, Ugo Bonacic, is murdered. The homicide inspector leads the investigation, which directs him to a strange foreigner dressed in white, who came to town with an American diving representation. During the investigation, he finds out that old Ugo had a copy of one Titian paintings, for which unusual legend is bind. Finally, a new version of an old Titian painting legend is cleared up.