El Paso, a typical Wild West town in the southwestern United States near the Mexican border. It is the year 1881. For the last few months, the trains belonging to the famous railroad company, Twinnings & Co have been the target of a whole series of hold-ups and ambushes. The management of the company has decided enough is enough and they have to put an end to the raids. It has offered a reward of $15,000 for anyone who captures the leader of the gang responsible.

But no one in and around El Paso has the courage to take on the might of the bandidos, so the outlaws just keep on robbing train after train. Even the local Marshal is keeping well out of it.

It’s only when a stranger rides into town that things start to change. Bounty hunter John Cooper pays a visit to the local Twinnings & Co manager offering to end the railroad company’s problems once and for all. He gathers together a gang of his old partners and declares war on the bandidos. But during his pursuit, which will take him through half of the southwestern United States, Cooper soon discovers that on this mission nothing is quite what it seems...