In the thirty's Shanghai, code named "cat" my party of Shanghai underground information station member Qiao Shan fought in the secret front: first cooperation in information station member Gu Fangren, classical elegance, with a dog in Longmen, Ho coveted, won the Longmen boss dragon Pusheng trust, a firm foothold in Longmen. After juntong was scored, the contradiction between the Kuomintang Central Committee Organization Department Party Bureau Xu Xianwen and Lixingshe spy Zheng Boqun, in Longmen to help mediate between the Kuomintang and the rite, organs, the successful treatment of each other, our military leaders. At the same time, he and the renegade Zhou Jiakun wits, defend the secret organization, our party in Shanghai investigate and punish the traitor. Finally, to help in the dark, his wife Long Baobao and "frenemies" Comrade Xu Dongcheng, Joe Hill break through the heavy block, nine times after the test of life and death, transportation needs for Soviet arms and drug, to defend the party organization for security, support the struggle against "encirclement and suppression" and the national liberation made special contributions.