Kagome Higurashi's routine existence is suddenly interrupted when a demon pulls her into a well, sending her five hundred years back in time. In this period, Kagome rapidly discovers two facts: demons coexist with humans, and she has inadvertently brought a hazardous item from her own world—a marble-sized sphere called the Shikon Jewel. This peculiar orb grants immense power to any demon possessing it, making Kagome a vulnerable target for those intent on stealing it. During a battle with a demon, a rushed attempt to repel the creature causes Kagome to accidentally break the jewel, scattering its numerous fragments across feudal Japan. She soon realizes the serious repercussions of her actions as she is forced to collaborate with the half-demon Inuyasha to gather all the pieces before they end up in the wrong hands.