Austrian commandant Major Otto Hecht (Roger Moore) is carrying out Hitler's orders to loot ancient art treasures on the Greek island of Athena, unaware that local resistance leader Zeno (Telly Savalas) is hatching a plot to defeat him. A group of freedom fighters land on the island to battle the Nazi forces, freeing the slave labour prisoners in the process.

Hitler's plan to loot a treasure-laden Greek island is under way. A prison camp is built where the inmates dig up priceless art under the eye of the Austrian commandant Major Otto Hecht.

Zeno, the island's resistance leader and Eleana scheme to defeat the occupiers. Leading a group of freedom fighters, they clash with the Nazis as they try to save the condemned prisoners and the treasure hidden in the mountaintop monastery.

Undercover San Francisco cop Sean Cane (Chuck Norris) is forced to retire from the force when he goes berserk after the death of his partner. When he hears that his partner's girlfriend has also been killed, he sets out to exact revenge on the drug-selling Triads responsible.