Ushio considers his father's story about an ancient ancestor impaling a demon on a temple altar stone with the legendary Beast Spear to be absurd, but upon discovering the monster in his own basement, Ushio is compelled to reconsider the family legend! Fortunately, Ushio believes it is best to let sleeping dogs lie and leave captured demons undisturbed. Unfortunately, the release of the monster's evil energies begins to attract other demons to Ushio's hometown! To protect his friends and family from the invading spirits, Ushio is forced to release Tora from captivity. But will the cure prove worse than the curse? Will Ushio end his life as a Tora-snack? Or will the Beast Spear keep Tora in line long enough to save the city?