Not long after the appearance of the gate, a group went in to investigate the gate. Among the group only one man survived. Tahara now spends his time in his office taking care of the flower he found in the gate. But things are about to change as a group targets him for his research on contractors and the gate. Can Hei and the others get the information first?

Kirihara has searched long and hard for BK201?s true identity, and what she discovers of his past is shocking, but the impending destruction of Tokyo is foremost on the minds facing off in this final battle.