It was the chance of a lifetime for Elizabeth Mayne when her friend Amanda Penlan invited her to accompany her on a visit to the Tunak Islands in the South Seas, where her father was Governor. Even before they arrived they had heard a lot about the Chief Commissioner, Julian Stanville, who by all accounts was an ambitious schemer, a ruthless man of the world, who was more than prepared to advance his career by marrying the Governor's daughter. To teach him a lesson, the girls planned, aided by circumstances, to exchange identities and watch him making love to the wrong girl. Unfortunately, they left out of their calculations the possibility that the 'wrong girl' might fall in love with him.