An eccentric millionaire brings together four men who, under different circumstances, wanted to commit suicide. The proposal made to them is the following: they will travel to an islet that, according to legend, emerged from the sea when Atlantis sank and that houses a fabulous treasure buried by the Incas. But that territory is populated by the worst band of pirates and evildoers the world has ever known.

An unscrupulous husband exploits his beautiful wife to advance his own career. When he dies under mysterious circumstances, she is accused of murder. To clear her name, the widow ventures into the Parisian underworld in search of the real killer.

A young man is convicted of manslaughter and sentenced to a term in prison. There he forms a close relationship with his cellmate. Upon his release his wife is concerned as to how prison has changed the man she married.

The ship-owner Herr Reeder Roberts organizes a world trip on his luxury liner "Yoshiwara". Aboard are millionaires and famous artists, but also criminals. The manager of the ship-owner, Stefan Martini, has been murdered shortly before the departure in a mysterious way. Several persons are suspected and these are, precisely, the passengers of the "Yoshiwara".