The test can find monsters. But what if the monster is us?
A new detective assigned to a secret case. A new body is found. It matches the serial killer's pattern. Your captain orders you to hide evidence.
Jung Ba-Reum: A quiet, observant detective.
Captain Lee Seung-Gi: The tough unit captain.
Go Moo-Chi: A veteran detective.
Choi Hong-Joo: A sharp journalist.
Burn this file. The public can't know about the test. It's an order.
But Captain, this evidence proves our last arrest was wrong.
See? I told you. The higher-ups are dirty. What will you do now?