A massive underwater volcano erupts and puts a group of investigative scientists in danger. They are rescued by an atomic super submarine named The Alpha under the command of Captain McKenzie. The group is quickly taken to a vast underwater city known as Latitude Zero, a fantastic, Atlantean type utopia, a world beneath the ocean with its own sun. It is soon discovered that Captain McKenzie is at war with the evil Dr. Malic, a cruel scientist who wishes to rule mankind all the while conducting genetic experiments on humans and animals. Malic sends his agents to kidnap Dr. Okada, a human scientist who has created a serum that can immunize exposure to radiation.
as Capt. Craig McKenzie / Cmdr. Glenn McKenzie
as Dr. Malic / Lt. Hastings
as Dr. Ken Tashiro
as Dr. Jules Masson
as Perry Lawton
as Lucretia
as Tsuruko Okada
as Dr. Sugata
as Dr. Okada
as Capt. Kroiga
as Kobo
as Dr. Anne Barton
as Chin
as Griffon / Giant Rat / Bat Man
as Warren / Bat Man
as Giant Rat (uncredited)
as Giant Rat (uncredited)
as Bat Man (uncredited)
as Sailor on escort ship (uncredited)
as Subordinate with gun (uncredited)
as Advisor (uncredited)
as Additional Voices (voice) (uncredited)
