In trying to take back the bags of beans which were stolen from them, Joe and Martin are arrested by the sheriff of the small town Caveburg. They propose to pay their bail with the reward for catching a brutal bandit called Ironhead Mike, who is unbeatable. His favourite booze it's very strong and the laxative for horses that they put in it have no effect on Ironhead. After a hard battle Joe and Martin finally find a way to catch the giant and they continue their way to Las Vegas. After their split, Joe is arrested by the local sheriff and a corrupted judge, friend of Maurice, convict our hero to 25 years of prison. On the way to prison the sheriff tell to Joe that he is in fact an undercover federal agent and his mission is to find all the members of the gang, so he can't help our hero directly. He warn to Joe that Maurice sent an undercover assassin to kill him in prison, but he doesn't know his identity. After a lot of adventures in the jail Joe escapes from there with the help of Martin and his miners...