Spirits are a large part of grounder culture, when Clarke switches places with Finn to spare him his life and get the alliance, something happens that changes her. Changes the way the grounders and her own people look at her. (warning torture in first chapter) This is also slow burn. Clexa happens in later chapters)

"Reincarnation?" It was the wrong word for the right question. Whether she wants to or not, Clarke will seek out the truth from humanity's past, to survive now, so there will be a future. [AU Canon Timeline, Sci-Fi, Violence, Gore, Angst, Drama, Genetic Modification, Breeding Program, Adaptable Humanity, Adaptive World, Biotechnology, Nanotechnology, Mystery, Conspiracy, Clexa]