Margaret Ellis marries archaeologist Philip Bellamy to please her father, a trustee of Calder College where Philip teaches, and Philip's mother, who convinces Margaret that Philip will not succeed in finding ancient Greek ruins in North Africa, unless she is his wife. Bob Harding, who loves Margaret, joins them on their expedition as Philip's business manager. When Margaret contracts desert fever, Bob cares for her, but the alcoholic Philip takes the last bottle of brandy which Margaret needs. Hassan, a guide who hates Philip, sees the caving in of the ruins of a half-buried relic while Philip explores it, and announces Philip's death. Back home, after a tablet honoring Philip is unveiled, he returns drunk and smelling with hashish to overhear Margaret and Bob confess that they love each other. Philip accuses them of plotting his death, but when Hassan, who is now the servant of Margaret's doctor, sees Philip threaten Margaret, he stabs Philip to death. Margaret now accepts Bob's love.