Opening with an impressive destruction sequence, Deluge imagines a massive flood toppling skyscrapers in Manhattan after a West Coast earthquake, as Martin (Sidney Blackmer) is separated from his family in the chaos. He meets Claire (Peggy Shannon) with other survivors on an island, who attempt to avoid a band of marauders threatening the new society. Anticipating the Disaster Movie cycle by 40 years, this remarkable, little-known pre-Code production packs a punch.