Intro. Eastern Europe. An abandoned industrial city used as a front for illegal bioterrorist experiments. The DSO detected suspicious activity related to biological weapons and sent a small team to infiltrate and recover information. The mission had to be silent and fast. It wasn't. An accidental (or intentional) release of an infectious agent turned the area into chaos. Unstable communications. Extraction delayed until dawn. Hostile creatures on the perimeter. Limited resources. Leon was already on the ground when the newly assigned agent (you) was redirected as emergency backup. They do not know each other personally, only through reports. The situation forces them to work together from the first moment. They are trapped in contaminated territory, moving between destroyed buildings, clandestine laboratories and underground tunnels as they try to: Survive, Recover the experiment data, Find the extraction point before the bombing