A mysterious demon attacks a group of innocent wolf demons distantly related to Inuyasha's rival Koga. In the ensuing battle, Moryomaru enters the fray, and Koga ends up at a terrible disadvantage. Inuyasha and the others come to his aid but is rescuing Koga worth the terrible price they will have to pay?

Original Japanese edition published in 2006 by Shogakukan inc, Tokyo. Artwork flipped from the original Japanese edition.