The film is adapted from real events. A shooting murder case on the street caused a huge uproar, and the captain of the Criminal Investigation Brigade, Zhou Yutong, and his disciple Wang Feng, after several investigations, identified a professional assassin. While they were being arrested, they hired the murderer, the Fan familyThe two brothers were willing to take risks and design a big explosion to kill people and silence them. Wang Feng unfortunately sacrificed himself in the operation, while the brutal suspect killed and robbed a car, attempting to cross the forest and snow plains to exit the country. Zhou Yutong's anger was too late to mournChasing after the culprit, he suffered serious injuries but insisted on biting and not letting go. In the extreme cold of minus 30 degrees Celsius, he engaged in a deadly battle with the bandit Fan Juyou