A woman calls the police station after hearing shots near the old warehouses. Duty officer Jacek Nowak sends the seventh patrol to check this report. Unfortunately, staff aspirant Mikołaj Białach did not show up for duty. Constable Bartosz Sołtys is assigned to the pair of Assistant Commissioner Miłosz Bachleda. The police rush to the scene of the report. In empty post-factory rooms they find traces of blood and 9mm shell casings. The police ask the officer on duty to send a police technician. A little further, the seventh patrol finds a girl who, hearing the shots, got scared and tried to run away. While escaping, she fell and dislocated her leg. The girl turns out to be an important witness to the event, but she also causes a lot of confusion in the investigation. Meanwhile, Miłosz is very worried about Mikołaj. After duty, he decides to look for his patrol partner.
