The Prisoner finds himself a stranger in a Western town called "Harmony". He reluctantly takes on the job of the Sheriff in order to release a young saloon woman. As Sheriff he refuses to carry a gun until a killing spree forces him to take one up. After a gun fight with the Kid, The Prisoner wants to resign from his post but The Judge refuses to let him.

After all previous attempts to break Number Six have failed, Number Two decides the only way to obtain the information wanted is by using a system known as "Degree Absolute". A battle that will leave one of them dead. If Number Six wins, he will have survived the ultimate test and meet Number One.