A balloon 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.

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

balloons 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.