Two ditzy dance-hall girls are stranded on a tugboat floating down the big river after a night when all the crew kill each other in an unexplained frenzy.
| Actor | Role |
|---|---|
 Blanca GuerraFifi | Fifi |
 Ana Luisa PeluffoMina | Mina |
 Jorge AbrahamSalome | Salome |
| AAlfredo RosasEl Capitán | El Capitán |
 Camilo GarcíaChris | Chris |
| JJosé MendozaIndio | Indio |
| DDieter KollMarinero I | Marinero I |
 Gerardo AlbarránMarinero II | Marinero II |
| CCarlos TorresRico de Porta | Rico de Porta |