In Riga and the surrounding resort region, Lieutenant Siliņš and his fiancée Aija are kept busy by a surge in daring car thefts. During a high-speed pursuit, Aija nearly catches the criminals, only to see them escape at the last moment—but not before recognizing one of the thieves as her eighteen-year-old brother, Juris. The situation grows even more complicated when the fugitives, hiding in a forest, become accidental witnesses to an attack on a young woman. Hoping to redeem himself in his sister’s eyes, Juris sets out to find the attacker on his own, with tragic consequences. As the investigation unfolds, the police must untangle a web of interconnected crimes.

The police leadership is concerned about the increase in car thefts. The investigation of the thefts is entrusted to police captain Siliņš. Once, his fiancée and colleague Aija Kalniņa almost catches up with the criminals in her service car after a chase, but at the last moment they manage to escape. However, Aija manages to spot her eighteen-year-old brother Juris among the thieves. Hiding in the forest, the car thieves accidentally witness another crime—an attack on a woman. To justify himself in his sister's eyes, Juris sets out to find the criminal and is killed.