A young woman named Kaori Sakai is brought in to the hospital suffering mysterious symptoms and she feels that something is inside her. A mycelium finally manifests itself outside Kaori as branching filaments covering her body. Director Sawa proposes that it is a combination of a fungus and a parasitic worm's egg. Ray realizes it is a creation of the syndicate like the one which killed her friend Hana when they were children. Ray operates to eliminate the heart of the colony and saves Kaori...