While vacationing in Puerto Rico, a young Swedish woman falls in love with and marries a powerful local landowner. Ten years later, their marriage has turned sour; meanwhile, two Swedish doctors have arrived on the island to investigate a mysterious fever.

A nightclub waiter and a manicurist share the same room, he sleeps there by night and she by day. They've never meet , but they can't stand each other. Then they meet by chance, not knowing who's who and fall in love.