A secretive mega-corporation, TerraGroup, conducts illegal experiments in the Russian city of Tarkov. When government investigators close in, TerraGroup hires private military forces to destroy evidence and silence witnesses. Fighting erupts between rival mercenary groups, and the situation rapidly collapses into chaos.

The city is sealed off from the outside world. Civilians are abandoned. Law and order disappear. Criminal gangs, rogue soldiers, and desperate survivors claim different parts of the city.

You play as a mercenary left behind in the quarantine zone. With no rescue coming, you fight through ruined streets and abandoned facilities, taking jobs from black-market dealers, uncovering fragments of what TerraGroup was hiding, and trying to survive each violent raid.

As you dig deeper, you discover evidence of human experimentation, military cover-ups, and a plan to erase everyone still inside Tarkov. Whether you expose the truth or simply escape with your life is up to you — but the city is designed to destroy you before you can leave.