In the face of a too-tempting reward, Miroku's eagerness to investigate the cursed castle of a giant oni or "ogre" is at odds with the reluctance of Inu-Yasha. Is Naraku's absence from the scene a sign of increased demon activity to come? Next, in a more light-hearted vein, a misplaced monkey-god makes for mischief with Inu-Yasha and the others. Later, the reappearance of demon-slayer Sango's little brother, Kohaku, is just the start of new complications. Who are these enemies, and what is the source of their fascination with Inu-Yasha...?