The actors Heinz Doll, Hans Stiegler and Werner Mack have failed to look after the end of the last season in time for a new commitment and are now unemployed. Since they are just right that the Salzburg mountain hotel "Zum Blaue Enzian" staff looking for.
"Lucky" Davis, a ladies-man and a devil-may-care U. S. Marine Sergeant, is leading a Marine-squadron on an expedition through a Phillipine jungle where an outlaw bandit is leading a guerilla-war rebellion. Their assignment is to rescue a group of children from an island mission that has been cut off from all communication. It comes as a bit of a surprise when Davis discovers that the "children" are a group of 18-25 year-old girls blissfully bathing in a pool while awaiting rescue.
Baroness Marika von Korossy dresses up as a man, in order to compete in a horse race. Her victorious horse, Satan, will only allow her to ride him and throws everyone else off of him. That includes the dandy lieutenant Tibor von Denes, who immediately recognizes that Marika isn't a man. It isn't long before he makes friends with her and even gets her to dance with him. It's then that Marika takes off her hat and shows she's a woman, which causes jealous Ilonka von Peredy to go into a rage. When Marika is forced to sell her estate to raise money, Ilonka is able to get Marika's beloved Satan.
Adelaide e Gabe levam a família para passar um fim de semana na praia e descansar. Eles começam a aproveitar o ensolarado local, mas a chegada de um grupo misterioso muda tudo e a família se torna refém de seres com aparências iguais às suas.