Arata and the others have just learned that there are three more human bombs when a third suicide bombing in New Town’s factory district takes Joseph Auma’s life. Meanwhile, Kei and Kisaragi have infiltrated Heaven’s Leap in search of clues to the terrorist serial bombings. They discover proof they’re looking for, but find themselves exposed and taken captive.

Unit One has begun to grasp the truth behind the incidents following each other like a line of falling dominoes and team up with the SAD to continue their investigation. Arata guards the governor, who is at risk of being targeted again, while Kei organizes a sting using Kisaragi as bait. When he arrives at the appointed meeting place, however, he finds Shizuka Homura waiting for him.