After serving two decades in prison, Yellowbeard (Graham Chapman) breaks out determined to recover the treasure that he buried so long ago, alongside his son, old crew, and the British Navy.

A Scotland Yard undercover detective is on the trail of a saboteur who is part of a plot to set off a bomb in London. But when the detective's cover is blown, the plot begins to unravel.

Steve Beck (Vince Martin) is a Karate instructor, Robby Mason (Tom Jennings) his prize student. Beck is using drugs to give him an edge. Guy Duncan (Craig Pearce) is Beck's drug connection that threatens to expose Beck as a user then Beck kills Duncan, but Robby was witness to this. Robby confronts Beck about the killing, during the karate championship. Beck tries to kill Robby during the match and again afterward in the street.

After the insane General Jack D. Ripper initiates a nuclear strike on the Soviet Union, a war room full of politicians, generals and a Russian diplomat all frantically try to stop the nuclear strike.