N35 is designated the Middle Aged Man among prisoners in an isolated prison. He carries the codename "Pinch-Hitter". When a system-wide power outage plunges the prison into darkness and opens all cell locks, he finds himself unexpectedly released alongside three other prisoners and a cat. With guards absent and no visible exits, he must navigate the confined, enigmatic environment. His background prior to imprisonment remains undisclosed. The codename "Pinch-Hitter" implies potential competence in critical situations. His actions and responses contribute to the group's collective effort to understand their circumstances and seek escape.