Step into an Old West of legends, legacies, and lies, where machines come to life and deadly silver terrorizes the land. Twenty-four years have passed since the devastating Awakening of the rogue commuter train, Bucephalus, left countless dead and America forever changed. It also took everything from Geist Warden Gabriel Velasquez. It took his father, his sister, and left him infected with silver, an illness that can be controlled but not cured. Since that day, Gabriel has lived for vengeance, but his time is running out. A chance encounter in the Nevada desert sets Gabriel on the trail of the legendary Colt .45 Buntline Special, the Black Rose. Fabled lawman Wyatt Earp himself once carried the cursed revolver.

No one knows how he bent the demon to his will. Some say the Rose twisted him to hers. Whatever their pact, Wyatt Earp once carried the most feared gun in the West, a silver-spitting fiend. Only silver can kill Bucephalus, and only the Black Rose shoots silver. She's exactly what Gabriel needs, and he'll go to any lengths to get his hands on her. He will take the Black Rose for himself, one way or another, and finally have his revenge. But the Black Rose has plans of her own ¿.