is a third-person survival horror game that serves as the first chapter in a planned trilogy. The story centers on Milka Yotova , who was orphaned as a child after her father, Alexander Yotov, was murdered by his colleague, Denislav Pavlov .

The plot explores a struggle over a secret "zombie infection" and the efforts to control it:

: Milka is brought back to the Buzludzha Monument, where she is trapped and must survive while facing the risk of zombie infection.

: Denislav Pavlov murdered Alexander but failed to find the secret injections. Twenty years later, Milka has become an agent and is kidnapped by Denislav due to her connection to her father.