Lieutenant Commander Izidor Vlk and Lieutenant Commander Herkules Drátek are applying for the position of Criminal Service Commander. When Vlk fails due to his stupidity, his assistant is determined to help her chief to the post by cutting the brake lines of Drátek's car. However, the newly appointed crime chief orders Wolf to ride in the car with him, and the two end up crashing. The condition of both wounded is serious, and both need transplants. In the end, only Wire survives. A few months later, Major Prubner, Drátek's subordinate, is summoned with his team, his colleague Skálová and detectives Rorýs and Dymák to the murder case of Katerina Starablazková. Starablazková had an axe stuck in her head and a large sign on the furniture in her apartment said ATSMOP. However, Prubner and his people also found the same sign in the case of the suicide of Kozina Sladky, who jumped from the 123rd floor of a block of flats, and in the case of the murdered former head of the criminal police, Horváth. The perpetrator also put police psychologist Kmonícková into deep hypnosis. She too had a strange sign in her office.