In the peaceful kingdom of Hetvia, Count Dakkar prepares two high-tech submarines to explore the ocean depths. Jealous of Hetvia's bounty and eager for war, the wicked Baron Hubert Falon attempts to steal the two submersibles for nefarious use. An undersea chase ensues, which leads the two rivals, along with Dakkar's daughter and her lover, into a secret world ruled by a race of strange aquatic creatures.

Genres

Cast

Lionel Barrymore

Andre Dakkar

Jacqueline Gadsden

Sonia Dakkar

Lloyd Hughes

Nikolai Roget

Montagu Love

Falon

Montagu Love

Mikhail

Snitz Edwards

Anton

Gibson Gowland

Dmitry

Karl Dane

(uncredited)

Pauline Starke

(uncredited)

Angelo Rossitto

Underwater Creature