InuYasha's father defeated a powerful Chinese moth yōkai named "Hyōga" 200 years ago. Now a Shikon Jewel fragment has freed "Menōmaru", Hyōga's son. He seeks revenge for his father's destruction and to free the power of his father sealed away with him. Menōmaru and his minions "Hari" and "Ruri" begin battling with InuYasha. Sango and Miroku have their hands full dealing with the duo, Ruri having copied Miroku's Wind Tunnel and Hari having stolen Sango's faithful companion, Kirara. Menōmaru curses Kagome so she turns against InuYasha.