Season 1

Oh Soryong steps in a case, while Han Do, once a drama producer, joins the Trigger team.

Han Do finds himself accused in a case and decides to track down the real culprit.

The team must catch the culprit before things take a turn for the worse.

A suspect in a disappearance case returns twenty years later, seeking out Soryong.

A building collapses, and Soryong has an emotional clash with Han Do.

A familiar face returns to Trigger after ten years, seeking help again for a renewed threat.

A surprising confession unsettles Han Do and Soryong. Cracks form within the Trigger team.

The team finds a new lead in a case, but the past is firmly sealed to unravel.

As Soryong hunts for answers, Giho throws the team into chaos.

Soryong uncovers hidden truths behind the case from twenty years ago.

Soryong and Han Do dig into a vast conspiracy, finally coming face-to-face with a shocking truth.

The Trigger team risks all to reveal the truth while fending off the villain's counterattacks.