《地狱之轮》的故事发生在美国内战之后,主人公是一名原南部邦联士兵。为了报杀妻之仇,他只身来到遥远的西部。经过一系列事件,他成了北美横贯大铁路修建过程中的传奇人物。剧名「地狱之轮」是横贯大铁路中心枢纽上一座小镇的别称,也是该剧的故事地点。这里有着典型的西部「元素」:危险、暴力、粗俗、目无法纪、腐败、堕落、丰乳肥臀、种族歧视、大规模移民。北美横贯大铁路是人类历史上首个超大工程量的工程项目,但也是美国历史上最黑暗血腥的事件之一。Cullen Bohannon, a former soldier and slaveholder, follows the track of a band of Union soldiers, the killers of his wife. This brings him to the middle of one of the biggest projects in US history, the building of the transcontinental railroad. After the war years in the 1860s, this undertaking connected the prospering east with the still wild west.