At the beginning of the episode, Nikolai explains the security measures of Mersault Prison, pointing out the 12-digit passcodes and the armed patrols. He mentions that Dazai and Fyodor only have 30 minutes before a lethal poison takes effect on them. To assist them, Sigma presents a tray with various items: a radio, a keycard, coin bombs, and a satellite phone. Fyodor chooses the keycard, while Dazai selects Sigma himself. Sigma is torn between astonishment and panic as he watches the risky game unfolding before him.

Elsewhere, Aya grows anxious about the locked-down airport, realizing that escape might be impossible. Bram reveals that he cannot command his coven without Fukuchi’s sword and suggests that he might simply hibernate for the next 200 years to wait out the chaos. Their conversation is interrupted when a vampire guard discovers them.

Meanwhile, Dazai—now outside his cell—dances with Sigma through the sprawling corridors. Sigma, growing increasingly frustrated, questions their strategy against Fyodor, especially when he notices that Fyodor remains seated despite the game having begun. Their conversation reveals a flashback from five days prior: Sigma was rescued by Nikolai and convinced to participate in the game for his own safety, as Fyodor intended to kill him. Throughout his existence, Sigma has felt manipulated by multiple parties, including Fyodor, Nikolai, and even Dazai. Driven by the desire to find a safe home, he resolves to eliminate Fyodor.

Back in the present, Dazai and Sigma encounter guards while navigating the prison, only to find them already taken out by an intruder. A radio transmission identifies the intruder as the vampire Chuuya.

At the airport, Kenji comes to Aya’s rescue, effortlessly overpowering the vampire guards. He mentions that Ranpo sent him after figuring out someone would flee Fukuchi. Seeing his chance, Bram suggests Kenji work on his farm. This lighthearted moment is interrupted by the arrival of a wolf-like Tetchō, who confronts Kenji. Tetchō interprets Bram’s affiliation with the Agency as proof of their possession of Jōno and engages Kenji in battle.

At the same time, Atsushi encounters Teruko, who is disguised as a young girl. A video recording of Tachihara on Atsushi’s phone convinces Teruko of the Agency’s innocence. She recalls a shared memory from the Sky Casino and agrees to help the Agency on the condition that she meets Ranpo. As Atsushi reaches for a payphone to contact Ranpo, Teruko reveals a potentially threatening intent.

The episode ends with a clash between Kenji and Tetchō. Though Kenji manages to disarm Tetchō, the latter unveils another layer of his abilities and overwhelms Kenji with sheer brutality.