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

Trigger Season 1 Episodes...

• s01e01 - Season 1, Episode 1
• s01e02 - Season 1, Episode 2
• s01e03 - Season 1, Episode 3
• s01e04 - Season 1, Episode 4
• s01e05 - Season 1, Episode 5
• s01e06 - Season 1, Episode 6
• s01e07 - Season 1, Episode 7
• s01e08 - Season 1, Episode 8
• s01e09 - Season 1, Episode 9
• s01e10 - Season 1, Episode 10

Trigger Show Summary

Guns flood Seoul's streets, leading ordinary lives into chaos. As violence spreads, a haunted cop and a mysterious ally race to stop the next disaster.