A mysterious force is attacking Inuyasha and preventing him from obtaining the last Shikon shard. Inuyasha also faces the dreaded Naraku, who will stop at nothing to obtain the shard.

On the surface, Muso seems to be just another incarnation of Naraku and he also seems to be impervious to Naraku's will. Who is he and what is his connection to Inu-Yasha and Kikyo? Then, Inu-Yasha and company go looking for a way to make Tetsusaiga more powerful.

Inuyasha has been trapped inside the holy shield of Mount Hakurei, where his demonic power has been stripped away. Will Miroku's wind tunnel be strong enough to free him? And will Inuyasha's strength be enough to defeat the leader of the Band of Seven, who is stronger than ever?

"Inuyasha and Kagome's archnemesis Naraku attempts to revive a cursed tree that once fed on humans and demons alike--but his plan backfires. Then Naraku must face an internal enemy--the armor encasing his black heart. And finally, Moryomaru attacks! Has Naraku finally met his match?!" -- from publisher's web site.

"InuYasha must defend himself against the corrupted human Toshu, who turns out to be responsible for the creation of the mysterious sword known as Dakki. Toshu is intent on taking Inuyasha's sword, the mighty Tetsusaiga, and Dakki's unique properties pose a serious threat to Tetsusaiga. If Inuyasha loses this battle, then the Tetsusaiga will be gone for good."--P. [4] of cover.

"Inuyasha and the crew are locked deep in combat with the scheming Hakudoshi. The plot thickens as both Kagura and Hakudoshi's plans come to light. In a rare moment, Inuyasha fights on the same side as Kagura. It seems that Hakudoshi will stop at nothing to achieve his goals, but will he succeed?" -- p. [4] of cover.

"The deceased turtle demon Meioju is revived when a piece of Moryomaru's flesh comes in contact with it. Meioju's shell is said to be the toughest shell of any armored demon, and Moryomaru uses it to create an unbelievably powerful armor. Even with the help of Sesshomaru, does Inuyasha stand a chance of penetrating this new armor?!" -- from publisher's web site.

Inuyasha and the rest of the gang travel to a mountain fortress as they search for the final shard of the Shikon Jewel, while Naraku joins forces with the demon Abi Hime to search for a path to the underworld.