Spirits known as kamui are thrown into chaos when the sacred spirit Okikurumi is taken from Atsuma's village, and the imbalance threatens to destroy Earth. Infused with a spirit of an ancient sword, Atsuma must leave his village to reclaim Okikurumi. After encountering NOA - an organization of youths who wield the power of the kamui and who may hold the key to Okikurumi, Atsuma is recruited by Sumire, a young woman with an empty soul who yearns for a miracle. Atsuma and his new companions must work together to find Okikurumi before the world is destroyed.