Hei and Yin's betrayal leaves them fractured, hunted, and morally unmoored, the show opens by stripping away every anchor they had. The story pivots to Suou, a girl caught between factions that treat her as a tool, and the real horror is watching her learn that no faction wants to save her. Contractors are no longer hunted, but that mercy arrives too late to matter, everyone's already been used up. The series fractures its own narrative across competing viewpoints and timelines, forcing you to trust nothing about what you're being shown. It's colder than the first season, meaner to its characters, and honest about what happens when the spy game stops pretending the people in it matter more than the mission.

After turning against the Syndicate, Hei is on the run with Yin and makes his way to Russia. There he meets Suou Pavlichenko, a teenage girl whose twin brother Shion becomes a Contractor on a night of falling meteors. Her ordinary school life ends when a masked man in black invades her home, and she learns she carries latent Contractor powers of her own. Suou and her family are pulled into a war among Contractors and rival intelligence factions. Back in Tokyo, Misaki Kirihara pursues her own investigation into Hei, the Contractors and the Syndicate, whose people hold key posts in the police and intelligence services.