Jean Vigneron's manservant is blackmailing his boss, who is having an affair with Ines de Montalban. The servant is murdered. Everyone accuses Vigneron, who keeps quiet so as not to compromise his lover. His innocence proved, Vigneron flees with Ines. Montalban, the cheated husband, tries to forget them, but sinks into debauchery. Despite ordeals in an unwelcoming Africa, love conquers all.