An engineer and a professor attempt to build and test an underwater habitat for human beings. However, the environment they are doing this in may not be as stable as expected.
Joe, a gorilla who is taken away from Africa to perform in a nightclub longs for the wilderness. One night when he is intoxicated by three drunks, Joe loses control and the court orders his execution.
Ben Harris and Harold Tufnell-Jones are rescuers and British nationals who do their best to rescue a woman from Sir Hugh, the captain of an underwater establishment.