Some say that you can penetrate into the Heart of the Zone if your aspirations are pure. Others - only if you have the “key” artifact. Stalker Kai goes there to save a loved one from death. The owner of the “key”, a dealer in stolen Lexus, to rescue his best friend. Whose aspiration is nobler? Who will get what they want? This will be decided by the Zone, which has a unique sense of justice, and its instrument is the Black Judge.