Kagome leads a fairly normal life, in spite of her weird family. Her house is a thousand-year-old Japanese temple, and her grandfather talks about the history of the house endlessly. Legend has it that the old well on the temple grounds keeps a vicious ancient monster at bay; Kagome never believed those legends, until now. The well opens up and sucked Kagome inside transporting her to an ancient time of enchanted forests and giant demons.

Kagome is soon confronted by her odd resemblance to Kikyou, the girl who controlled the magical Shikon no Tama talisman and imprisoned the legendary half-demon InuYasha. Upon entering this fantasy world, Kagome is attacked by a demon hunting the Shikon no Tama; she unwittingly releases InuYasha from his imprisonment, only to find that he's no hero.