During a nasty little action on the metals-rich planet Threnn, Natvig Tomelos, a young officer on mountain patrol against an enemy force known as the Toch Tinn, is captured and savagely mutilated by the enemy commander. Regenerative surgery restores Tom's body, but he cannot rest until he faces his enemy again in the field. Help from an unexpected quarter returns him to Threnn in an unexpected role, and the hunt is on