Kagome has never believed in myths and legends, until one day when a hideous, otherworldly creature pulls her out of her own world and into Japan's ancient past.

Miroku is eager to explore the castle of the giant oni, but Inu-Yasha is reluctant. Naraku's absence may make demon appearences more likely. Then, a monkey-god decides to make some mischief and Sango's little brother brings some new complications.

As she battles the evil priestess Tsubaki, Kagome is poisoned by a corrupted shard of the Shikon Jewel that threatens to turn her against Inu-Yasha and put her under Kagura's control.

The search for the final shard of the Shikon Jewel leads Inuyasha and the gang to a mountain fortress. But the gate is guarded by two giant statues and a force that will only allow the dead to enter! Seeking a path to the underworld, Naraku meanwhile teams up with a new demon, Abi Hime, who hunts the blood of innocent villagers to heal her mother. Inuyasha and friends step in to stop them when they find that Kikyo may be involved!

Entrenched in the battle of their lives against the undead Band of Seven, Inuyasha and friends get some unlikely allies when his brother Sesshmoaru and Koga get caught up in the skirmish. At the climax of the bloody battle, another of Naraku's malevolent plots is revealed.