Someone's trying to get the guys out of a town where they are helping a widow run from the saloon left to her by her late husband, but they can't figure out who's doing it or why.

While Curry drives a wagonload of dynamite across rugged country, Heyes hires on as a guide for two Englishmen searching for a tribe of giant redheaded Indians rumored to have lived in the area of Devil's Hole.

Curry must clear his name when someone claiming to be Kid Curry admits to a murder charge and is scheduled for hanging.

After the Kid wins another duel (over a man who claimed the Kid was cheating), the boys are contacted and offered a job by a man called ""Doc"" Donovan. They are to come with him into Mexico, to rescue a hostage from Mexicans who only want their rightful money.

The Kid senses that Doc knows who they are, but they cannot be certain, and why would he hire them instead of collecting the fee?

They manage to sneak out the hostage, Mr Zulick, but are chased by the kidnappers. After a daring stunt, they lose their followers, and Mr Zulick can continue on his journey. Then, Doc turns them over to the sheriff...

But where is Mr Zulick headed and why? And why does the sheriff want to let Heyes and the Kid go?