Car salesman Mark sails down the Rhine to Amsterdam in an old barge with his friend Ulli and a girl named Elke. During his shore leave, Mark repeatedly encounters the pretty tour guide Petra, who is traveling to the same destination with a busload of tourists. The two fall in love.
| Actor | Role |
|---|---|
 Roy BlackMark Tanner | Mark Tanner |
 Barbara NielsenPetra Hauser | Petra Hauser |
| PPeter MillowitschUlli Specht | Ulli Specht |
 Jutta SpeidelElke Steubels | Elke Steubels |
 Agnes WindeckHenriette Kopisch | Henriette Kopisch |
 Willy MillowitschJupp König | Jupp König |
 Eddi ArentEugen Quandt | Eugen Quandt |
 Edith HanckeEleonore Strunz | Eleonore Strunz |
 Ralf WolterErwin | Erwin |
 Rut RexHilde | Hilde |
 Anita HegerlandAnita | Anita |
 Horst NaumannMark's Chief | Mark's Chief |
 Catharina ContiLona | Lona |
 Sky du MontMan from Travel Agency | Man from Travel Agency |
 Stefan BehrensRob | Rob |