Rachel Cade (Dickinson) is a missionary nurse working in the Belgian Congo at the start of World War II. She manages to win the trust of the local tribe and is smitten when injured RAF volunteer, Dr. Paul Winton (Moore), literally lands at her feet. Rachel succumbs to Paul's blandishments and discovers she's pregnant after he returns home. Belgian administrator Henri Derode (Finch), who is in love with Rachel, informs Paul and he returns but wants Rachel to lie about their previous relationship. She rejects him and realizes she'd chosen the wrong man all along.