In 1993, a large number of Chinese businessmen flocked to Russia to seek gold. Among them, there were several distinctive faces. They sought information from the dealers and sought support from both the black and white worlds. They were a secret team sent by the Chinese police. Their goal was to secretly find intelligence clues about the Sino-Russian K3 train robbery that shocked China and the world, and to arrest all the fugitive suspects involved in the case. Under the leadership of Chen Erli, the leader of the Chinese police team, the team overcame many obstacles, experienced life-threatening hardships, and embarked on a tortuous and thrilling pursuit journey in a distant foreign country.