Part 4/8:

Determined to rescue his elderly neighbor, Enid, Mark sends Sergey to help him break down the wall into her apartment. Much to their relief, they find Enid peacefully sleeping. However, as the group reconvenes at the window to gauge the situation, they witness the establishment of temporary medical camps across the community, alarming both them and the surrounding residents.

When a voice over the intercom claims a noxious gas leak, Aiden starts to suspect a cover-up. The atmosphere turns dire as they watch a desperate man shoot out of a building, only to be shot by a sniper in an unsettling moment of violence. Tensions rise as the hazmat personnel start aggressively entering nearby units, forcibly removing residents who do not comply, urging Mark and his group to act quickly.