A handsome but penniless young man takes a summer job as a swimming instructor in a picturesque Alpine lake resort. He falls in love with a young heiress who is staying there with her father, but he also grabs the attention of tomboyish Puck who lives on the other side of the lake and who saves him from drowning one foggy night. Further havoc is caused by the arrival of Eric's old sweetheart whose husband is wanted by the police.
Jean-Pierre Aumont
as Eric Heller
Odette Joyeux
as Carla Lyssenhop
Rosine Deréan
as Dany Lyssenhop
Michel Simon
as Oscar Lyssenhop
Simone Simon
as Puck
Illa Meery
as Anika
Vladimir Sokoloff
as Baron Dobbersberg
Maroulka
as Vefi
Paul Asselin
as Brindel
Romain Bouquet
as Ein Wirt
Maurice Rémy
as Graf Stereny
Eugène Dumas
as Matz
