For a chance at a pardon, a ninja assassin joins other condemned criminals on a journey to a mysterious island to retrieve an elixir of immortality.

Outside the magical barriers lies a world overrun by fiery beasts known as Flame Demons, and the only ones who can protect humanity are the Fire Hunters. In the dark woods where the beasts roam is where Touko, a young villager, is rescued from attack by one of these skilled trackers, Koushi. But their meeting was no accident, and a new destiny begins.

Nina Iseri drops out of high school and moves to Tokyo by herself. In front of the station in the suburbs of Tokyo, Nina sees Momo Kawaragi singing alone and is touched by the power of music. Nina decides to form a band with Momo, Subaru Awasu, a girl who hides her true feelings, Tomo Ebutsuka, who was abandoned by her parents, and Rupa, a lonely girl without any family...

Nina Iseri drops out of high school and moves to Tokyo by herself. In front of the station in the suburbs of Tokyo, Nina sees Momo Kawaragi singing alone and is touched by the power of music. Nina decides to form a band with Momo, Subaru Awasu, a girl who hides her true feelings, Tomo Ebutsuka, who was abandoned by her parents, and Rupa, a lonely girl without any family...

For a chance at a pardon, a ninja assassin joins other condemned criminals on a journey to a mysterious island to retrieve an elixir of immortality.

Outside the magical barriers lies a world overrun by fiery beasts known as Flame Demons, and the only ones who can protect humanity are the Fire Hunters. In the dark woods where the beasts roam is where Touko, a young villager, is rescued from attack by one of these skilled trackers, Koushi. But their meeting was no accident, and a new destiny begins.