Dans le ventre du léviathan

In order to save an assassinated scientist, a submarine and its crew are shrunk to microscopic size and injected into his bloodstream.

Guy Luthan, a British doctor working at a hospital in New York, starts making unwelcome enquiries when the body of a man who died in his emergency room disappears. After the trail leads Luthan to the door of an eminent surgeon at the hospital, Luthan soon finds himself in extreme danger people who want the hospital's secret to remain undiscovered.

Convicts escaping from Devil's Island come under the influence of a strange Christ-like figure.

A ship sent to investigate a wave of mysterious sinkings encounters the advanced submarine, the Nautilus, commanded by Captain Nemo.