1. 1
   

   Episode 1

   50m

   When a shocking mass shooting shatters Korea's calm, Lee Do races to stop the violence — then realizes the threat of illegal guns is just beginning.

2. 2
   

   Episode 2

   1h 1m

   As shootings spread, Lee Do discovers guns in the hands of everyday citizens. When a victim hits close to home, his investigation grows more urgent.

3. 3
   

   Episode 3

   43m

   A police raid uncovers a cache of military weapons. Lee Do and his new ally Moon Baek close in on the arms network as the city reels from bloodshed.

4. 4
   

   Episode 4

   55m

   Lee Do confronts a violent standoff and must decide how far to go to stop the killings, while suspicions about Moon Baek threaten their fragile alliance.

5. 5
   

   Episode 5

   45m

   Guns reach bullied students and grieving parents, sparking new tragedies. Lee Do uncovers a network delivering weapons to vulnerable people across Korea.

6. 6
   

   Episode 6

   44m

   A gun in the hands of a student spells crisis at school. As panic spreads, Lee Do and Moon Baek race rush to restore order — but it may be too late.

7. 7
   

   Episode 7

   46m

   As fear and confusion grow, police and gangs rush to recover illegal guns. Lee Do feels powerless as the true scale of the arms crisis comes to light.

8. 8
   

   Episode 8

   46m

   Police raid the gun syndicate, and rival gangs and old enemies clash in bloody battles. Lee Do is pushed to the limits as violence hits all of Korea.

9. 9
   

   Episode 9

   37m

   As guns reach new hands and fear sweeps the nation, Moon Baek's message echoes through the media. Across Korea, people must choose how to respond.

10. 10
    

    Episode 10

    41m

    With emotions running high, Lee Do and Moon Baek move toward a crossroads. One final choice will shape Korea's future — or plunge it into darkness.

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