Sailors Jochen, Carlo, and Blacky sign on to an old steamboat. It's a good thing Blacky oversleeps the ship's departure. This allows him to track down a gang of criminals. Their boss is planning an insurance fraud and wants to blow up the ship and its crew.
| Actor | Role |
|---|---|
 Karin BaalVera | Vera |
 Joachim HansenJochen | Jochen |
 Horst FrankFrederic | Frederic |
 Carlo GiustiniCarlos | Carlos |
 Ugo SassoKapitän Brinkmann | Kapitän Brinkmann |
 Luisella BoniDiana | Diana |
 Carmela CorrenSängerin | Sängerin |
| MMario del MariusQuieto | Quieto |
 Bill Ramseyo.A. | o.A. |
 Dorothee ParkerNot listed | Not listed |