Lord Oyama is dead. His heir, Hayato, and his beautiful daughter, Mizuki, are taken prisoner by the victor, Lord Kurohoshi and imprisoned in his castle at the foot of a brooding volcano. Only Karasu, their brother and ronin priest can save them from a terrible fate. Forging an unlikely alliance with Thom Devlin, an enigmatic pirate from the far side of the world, Karasu sets out on a quest to free his siblings and restore his brother as the rightful ruler of Kyo-Toshi province. But all is not as it seems. Mizuki possess the gift of second sight, a great power that dark forces seek and one that puts her in mortal danger. Time beneath the shadow of the volcano is running out, the peril it holds immense and the warlord Kurohoshi seemingly invincible. The friendship between Karasu and Thom, at first wary, ultimately becomes resolute as they fight to save those they love, yet it is tested to its very core as unforeseen events unfold.