An unconventional woman and a man shrouded in mystery walk a tightrope of desire as they race against a killer to find a machine that could change the world.

Clint Eastwood is Wes Block, a lawman teetering on a tightrope separating him from the man he strives to be and the man he fears he is. When Block investigates some brutal sex murders, he discovers a chilling link between himself and the suspect.