Sir Philip Ashlow (Stewart Granger), his neglected wife, Lady Ashlow (Ava Gardner) and his best friend Henry Brittingham-Brett (David Niven) are shipwrecked on a desert island. This potential ménage à trois where the two men compete for the lady's attention is interrupted by the unexpected arrival of a fourth inhabitant of the island.

Lady Susan Ashlow

Sir Philip Ashlow

Henry Brittingham-Brett

Mario

The Rev. Bertram Brittingham-Brett

Mrs. Hermione Brittingham-Brett

Mr. Trollope

Miss Edwards

Capt. MacWalt

Lady Susan Ashlow

Sir Philip Ashlow

Henry Brittingham-Brett

Mario

The Rev. Bertram Brittingham-Brett

Mrs. Hermione Brittingham-Brett

Mr. Trollope

Miss Edwards

Capt. MacWalt