The story is based on the business situation in Shanghai in 193s, and tells the bumpy and bizarre life experience of Zhang Tianyun, the fourth generation descendant of the Red Gang. Around "Tongyichang", a time-honored clothing brand, the heads of two generations fought with Shanghai black forces, big capitalists and Japanese chaebol in a thrilling commercial war. In the play, Zhang Tianyun and Wang Renchang changed from entrepreneurial brothers to rivals in shopping malls and love, and even became sworn enemies. Finally, they fell into the abyss of power struggle, hatred and resentment. In order to save his family business, Zhang Fangjing, the third generation head of Tongyichang, reluctantly borrowed usury concession from the Japanese to open a shop. However, the business is bleak and difficult to operate. In order to repay the loan, Zhang Fangjing tried his best to obtain a large order for making official clothes for Yuan Shikai's government. Zhao Xueming and other revolutionaries assassinated the envoy for anti-government. This incident implicated Tongyichang, and Zhang Fangjing was betrayed by his brothers, who attacked his heart and spilled blood on the garment workshop. The death of his father awakened Zhang Tianyun's responsibility to "Tongyichang" and his family, and at the same time aroused his desire for revenge and overthrew Tongyichang. In less than a year, Zhang Tianyun and Wang Renchang, with extraordinary perseverance and extraordinary intelligence, finally created their own brand in Shanghai after several hardships: "Yunchang" suit shop. In order to defeat the cunning competitor, Toyo Garment in Kawakami, Japan, Zhang Tianyun endured great emotional pain: he used his daughter Yoko in Kawakami's love for himself, and with the help of Zhao Furu and Zhao Xueming, he finally won the holding of Toyo Garment and revived the family brand "Tongyichang". "Tongyichang" succeeded! Zhang Tianyun and Wang Renchang won their honor. Wang Renchang, who has been silently in love with Yoko, can no longer bear the betrayal of love and psychological torture, and finally completely breaks with Zhang Tianyun. "Tongyichang" once again fell into crisis, and the two brothers started a new round of life-and-death struggle on the beach! At this time, the Japanese army invaded and Shanghai fell, and the revenge of the Chuanshang family also pointed to "Tongyichang". In the face of national justice and personal grievances, Zhang Tianyun and Wang Renchang finally made a conscience choice.