After freeing a giant eagle from a snare, Okchaw Chief Silverlock witnesses the destruction of his village and the mass murder of his people. He is spirited away from the scene of the massacre by the Imnura, legendary eagle riders wielding advanced weaponry. In their cliff city of Emnor, he attempts to deal with his physical wounds as well as his deep survivor's guilt and consuming hunger for violent revenge. But when an old enemy of Emnor returns to the cliff city with a new and terrible power, Silverlock finds himself thrust once more into open war.