In 1936, the Japanese invaders pressed on North China. Han Zhijie, the young master of the Kowloon Chamber of Commerce, who became famous for shooting and killing Xue Antai, the leader of the Xing'an Gang in Qingdao, ten years ago, hated Japan because his mother was killed by a Japanese warship. He unexpectedly took back the dock occupied by the Japanese businessman Fujisawa. Fujisawa, who wanted to use the dock for drug smuggling, regarded Han Zhijie as a thorn in his side. Xiao Lan, the daughter of Xue Antai, endured the humiliation and approached Han Zhijie to avenge her father, but fell in love with Han Zhijie by chance; Zeng Nian'an, the boss of the Kowloon Chamber of Commerce, wanted to kill Han Zhijie for profit; Han Zhijie's good brother Li Chenxing also turned against him because of Xiao Lan. Han Zhijie fell into a lot of killing situations and survived a narrow escape. Xiao Lan risked her life to help him out of danger. Unexpectedly, when Han Zhijie and Xiao Lan were newly married, the Han family was wiped out by Fujisawa, who blamed Xiao Lan, and the lovers turned against each other. When the July 7 Incident broke out, Han Zhijie and Xiao Lan, under the guidance of the Communist Party of China, put aside their grudges and plunged into the anti-Japanese torrent.