Fallout

Available Summaries:

Fallout is set in 2296, 219 years after the global nuclear holocaust known as the Great War. During this apocalyptic event, some managed to survive in Vaults, massive fallout shelters constructed by the Vault-Tec Corporation across the United States, while leaving the rest outside to suffer and struggle for survival in the wasteland... The Brotherhood of Steel is a post-War quasi-religious technocratic paramilitary order, founded in the immediate aftermath of the Great War by members of the United States Armed Forces and the government-sponsored scientific community...

Dane is a member of the Knights of San Fernando, a chapter of the Brotherhood of Steel operating in the greater Los Angeles area in 2296... Nothing is known about Dane's history save for that they were not born into the Brotherhood of Steel, though how and when they were recruited is also unknown. In their military career, Dane has experienced living in the wasteland and knows the worst of how humanity can be. In joining the Brotherhood of Steel, Dane was attracted to the idea of having "brothers" and "sisters" that supported each other, and values in learning about technology.

-Fallout Wiki.