DOMULL.The Mobile Police Division investigates an incident involving a mass murder with only one survivor, a young girl. Roy De Vice and Ralph Bomers discover their superiors are involved, distributing a drug called Domull which turns humans into monsters in an attempt to combat the Lucifer Hawk. The Mobile Police Division attack the Yokoyama Chemicals facility which they suspect is the source of the drug, and the AMP join them in the assault. When they enter, Roy discovers that a captured Lucifer Hawk was being used as the source of the drug. The young girl was used as a vehicle to release it and Roy reluctantly kills her. The AMP is then assigned to take over the investigation. Katsumi breaks up with Roy because of her key role in the conflict between humans and Nemesis and to protect him from herself.