Deluge

Scientists detect a violent storm heading toward New York and warn the city while tracking abnormal barometric patterns. A sudden solar eclipse confirms their theories of approaching catastrophe. Telegraphs from Rome and London report days of earthquakes and declare that 'The End of the World is at Hand.'

Martin Webster and his wife Helen gather their children, Ronny and Mary Ann, and essentials, heading toward a high rock formation to escape the floods. They sense the city collapsing as the sea rises and earthquakes intensify. The family hopes to survive the disaster on the coast.

The disaster strikes while Martin is away, and buildings crumble as earthquakes shake the city and tsunamis devastate the area. He returns to find his wife and children missing, leaving him to confront his grief alone. Isolated on a newly formed island, he resolves to endure the aftermath and survive.

On a neighboring island, Claire Arlington is found unconscious by two surviving ruffians, Jephson and Norwood. The two men become possessive and begin feuding over her, threatening her safety. Claire recovers and struggles to escape their clutches.

Jephson kills Norwood and vows to retrieve Claire, intensifying the pursuit as he collaborates with the Bellamy gang. He sets out to track her down across the islands and seas, heightening the danger to her life. The chase for Claire becomes a central threat on the island.

Claire arrives exhausted on Martin's island, where Martin finds her, carries her back to his cabin, and begins nursing her back to health. The two form a growing bond as they rely on each other for survival in isolation. Their connection deepens beyond mere gratitude.

As Claire heals, Martin and she become close friends and confess their feelings. They both acknowledge a deep connection, complicating Martin's previously pledged loyalty to his wife Helen. Their budding romance unfolds against a backdrop of a shattered world.

Nearby, survivors on the other island band together to rebuild a town and community. Tom, the town's leader, has fallen for Helen and asks her to marry him, but she remains convinced that Martin is still alive and declines.

Jephson travels to the island and discovers Martin's secret tunnel, crossing paths with the Bellamy gang who have their own agenda. He uses this knowledge to threaten Claire and to force Martin out into the open.

Jephson abducts Claire and takes her to the Bellamy gang's hideout, placing her in peril and strengthening the gang's grip on the island. Martin becomes determined to rescue her and protect the town.

Martin sneaks into the Bellamy camp and rescues Claire, and the pair retreat into the tunnel. Jephson and the gang pursue them, leading to a tense fight inside the tunnel, where Claire delivers a fatal blow to Jephson with a spiked club.

A band of vigilantes led by Tom tracks the gang to the tunnel, rescuing Martin and Claire and bringing them back to the town. Martin reunites with Helen and their children and explains to Claire that he loves both her and his wife. He then helps establish an orderly economy and is elected mayor, while Claire, overwhelmed by the rival loyalties, ultimately leaves the town by swimming out to sea.