Anna Neagle plays a patriotic young British girl who joins the WRENS when war breaks out. She marries Michael Wilding, the son of an nobleman. Neagle is shipped off to Singapore and is presumed killed in action. Wilding's grief is assuaged when he meets American WAVE Frances Mercer. He remarries, and the couple have a child. But Neagle is not dead, merely marooned on a desert i...