A powerful but weary witch, known as the Crimson Witch, drifts into a village plagued by bandits, monsters, and a mysterious political lockdown. Despite her desire to be left alone, she's drawn into their fight, single-handedly confronting overwhelming odds and dispensing brutal justice, all while grappling with fragmented memories of a past she can't quite recall.

After a lifetime of training to become the "Crimson Witch," seventeen-year-old vigilante Sophie dies unexpectedly, only to be reborn in a fantasy world as Eris, a legendary figure sealed away for millennia. Waking with amnesia but retaining her deadly skills, she must immediately fight for her new life against dragons and monsters, beginning a journey to discover who she truly is in a world that already seems to fear her power.