Sarutobi Mirai has a lot to live up to as the granddaughter of Konoha's Third Hokage and the daughter of Sarutobi Asuma, the hero who gave up his life during the Great Ninja War. But as everyone continues to expect great things from her, she struggles to separate herself from her family's legacy and find her own way.

Mirai's journey escorting Kakashi and Guy takes an unexpected turn when their route is cut off by a massive landslide. While stopped at a village, Mirai meets Tatsumi, a young girl whose mother has died. She reveals to Mirai that she's in this particular village because there's a hot spring nearby that can bring the dead back to life. Mirai decides to join Tatsumi for a chance to meet her father, whom she only knows from the memories of others. What she finds is anything but the miracle hot spring she was hoping for--instead, she discovers the very cult that killed her father!