5-8 investigates the construction of a new district in post-apocalyptic Korea. Sa Wol and Seul Ah experience an unexpected attack.

Sul Ah begins to investigate the recent tragedy. Sa Wol grapples with guilt. 5-8 discovers a dark scheme taking place in the shadows.

5-8 warns Sul Ah about the chilling facts surrounding her investigation. Sa Wol partakes in an intense tournament in the hopes of becoming a deliveryman.