
"Discover the incredible world of tomorrow... 15 miles straight down at LATITUDE ZERO"
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.
Capt. Craig McKenzie / Cmdr. Glenn McKenzie

Dr. Malic / Lt. Hastings

Dr. Ken Tashiro

Dr. Jules Masson

Perry Lawton

Lucretia

Tsuruko Okada

Dr. Sugata

Dr. Okada

Capt. Kroiga
Kobo
Dr. Anne Barton

Chin

Griffon / Giant Rat / Bat Man

Warren / Bat Man
Giant Rat (uncredited)
Giant Rat (uncredited)
Bat Man (uncredited)
Sailor on escort ship (uncredited)
Subordinate with gun (uncredited)

Advisor (uncredited)

Additional Voices (voice) (uncredited)