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Episode 1

Episode number: 1

Overview: 5-8 investigates the construction of a new district in post-apocalyptic Korea. Sa-wol and Seul-ah experience an unexpected attack.

Episode 2

Episode number: 2

Overview: Seol-ah begins to investigate the recent tragedy. Sa-wol grapples with guilt. 5-8 discovers a dark scheme taking place in the shadows.

Episode 3

Episode number: 3

Overview: 5-8 warns Seol-ah about the chilling facts surrounding her investigation. Sa-wol partakes in an intense tournament in the hopes of becoming a deliveryman.

Episode 4

Episode number: 4

Overview: Sa-wol advances to the final round. Ryu Seok reveals his disturbing plans for the upcoming migration, despite his father's opposition.

Episode 5

Episode number: 5

Overview: In the aftermath of Ryu Seok's ploy, 5-8 plans to take him — and Cheonmyeong — down. Having finally achieved his dream, Sa-wol takes up his first mission.

Episode 6

Episode number: 6

Overview: Confronted with a crisis, Seok executes his endgame. 5-8 and Seol-ah team up to stop Cheonmyeong once and for all.