First it was a Bad Day for the Hangman, then there was Gunfight at Spanish Wells, and now there's Valley of the Gunman, and this his gunfighter is going to see many die, many live, and one legend born.

Not long after setting an explosion and robbing a gold train and inadvertently killing the crew, a cabal of otherwise law-abiding individuals discover a member of their group has loose lips. In old west fashion, the talker suddenly vanishes only to turn up dead a few days later. Some of the railroad detectives breathing down their necks along with a deputy sheriff meet their demise as well. Deputy US Marshal Jake Stone along with the sheriff himself is highly suspicious of one of their group who was once a gunslinger and outlaw. They take him into custody. They soon become suspicious of the others as well, threatening them with the hangman's noose. The one now in jail informs his cohorts that either they break him out or they will go to the gallows with him. Not considering the other option, they plan a very precise jailbreak.

During the break, the one incarcerated shoots yet another deputy sheriff in the process. Once the gun smoke has cleared, the law will be on the trail of a wanted man. Ride along with one of the most exciting Western adventures of 2017.