Yoo Si Jin and his squad are tasked to find the last three missing persons inside a building that could collapse at any time.

Now everyone knows Kang Mo Yeon's feelings about Yoo Si Jin, she's embarrassed and keeps running away from him. Dae Young receives some good news, while Si Jin meets up with Argus again in 'The Haunted Village'.

A package arrives which could damage both Seo Dae Young & Yoo Si Jin's relationship with their girl, while Si Jin has been ordered by Lieutenant General Yoon to leave Argus alone. Next to that, there is an outbreak of a M3 virus.