Trigger

1. 

   E1. Episode 1

   Jul 25, 2025 · 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. 

   E2. Episode 2

   Jul 25, 2025 · 61m

   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. 

   E3. Episode 3

   Jul 25, 2025 · 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. 

   E4. Episode 4

   Jul 25, 2025 · 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. 

   E5. Episode 5

   Jul 25, 2025 · 45m

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

6. 

   E6. Episode 6

   Jul 25, 2025 · 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.

+4 more episodes — open all seasons to browse every episode.