Haunted by visions of her deceased mother, Katsumi Liqueur heads off to Tokyo at the request of Rally Cheyenne, a police officer who claims to have information concerning her mother's mysterious death several years earlier. Expecting a smooth landing, Katsumi instead notices the Lucifer Hawk that sensed her arrival to the city standing on the wing of her plane. She awakens to burning pieces of the aircraft -- and to the creature as well, which chases her down and corners her. The members of AMP arrive just in time, but their efforts to control the Lucifer Hawk are for the most part ineffective. Katsumi then calls upon a power she herself didn't realize she had, and destroys the creature. Cheyenne arrives shortly afterwards to explain as much as she can. Though information concerning the threat she just faced is scarce, it is known that there are three types of Lucifer Hawks. Category one is the most plentiful but least intelligent, and category two is somewhat smarter, and cap
Profondément pertubée par sa première rencontre avec un Lucifer Hawk, Katsumi ne sait si elle doit accepter la proposition de Rally Cheyenne de rejoindre l'AMP. Elle doit de plus supporter la présence des autres membres de l'équipe, chargées de la protégée...