After losing her original form in battle against Delby, Shining Angel is witnessed by Aoi Hikaru, a kind and compassionate nurse who rushes to her aid. The angel pleads, "I'm sorry... I can't disappear... Please let me possess you..." and ultimately takes control of Aoi's body. Meanwhile, Delby, injured by the angel's attack, becomes possessed by Dr. Ozawa. Now bound by possession, the two find themselves working at the same hospital, inevitably drawn into a series of new and disturbing events.