Inuyasha and friends encounter a strange mountain with mystical powers. The mountain is so sacred Kirara, Kikyo and Shippo can't even set foot on it! Meanwhile the Army of Seven have resurrected their final member and now seek revenge on those responsible for their original deaths. Elsewhere Sesshômaru is in pursuit of Kohaku when he too is refuted by the purity of the mountain. What is the secret of this mountain? And will the Army of Seven be more than a match for Inuyasha and crew?