A wave of alien abductions is sweeping Tokyo, but this time it's Earthlings at risk of being kidnapped! Those responsible for the abductions are running a black market auction and selling Earthlings to the highest bidder. When AMO trainee Akira Gunji becomes one of their captives, his partner, Sho Tenkubashi, turns to the informants Yuen and Meimei for help. Unfortunately, rescuing Akira may come at a very steep price—Tenkubashi’s life.

All the while, Akira is imprisoned and growing more anxious the longer he's at the aliens' mercy. The AMO higher-ups have long suspected that Akira's body is host to an alien, and the time may have finally come for it to emerge!