Hannibal Heyes and Kid Curry are members of the Devil's Hole Gang, but it is the 1880s and they are finding that technology is making it very difficult to be a successful robber of banks and trains.
When Sheriff Lom Trevors finds that the Governor is happy to extend amnesty to Heyes and Curry, the boys jump at the chance. However, there is a catch - the amnesty must remain a secret for twelve months, and the boys must prove that they have earned it before it can be granted to them.
Thus - Mr. Joshua Smith and Mr. Thaddeus Jones are born.