The adventure is over, but life goes on for an elven mage who is just beginning to learn what it means to live. The elven mage Frieren and her brave companions have defeated the Demon King and brought peace to the land. However, Frieren will live far longer than the rest of her former group. How will she come to understand what life means for the people around her? At Eisen's urging, Frieren and her apprentice Fern set out northward to seek the land where the souls of heroes are said to rest, which just happens to be the location of the Demon King's castle. Along the way, they encounter Eise's apprentice, whose combat skills could prove useful – even though the Demon King has long since disappeared, his surviving minions still have a score to settle with Frieren.