In the 1920s and 1930s, the remnants of the Qing Dynasty were determined to restore the Qing Dynasty. They set up the "Zongshe Jueshituan" and colluded with Japanese spies. The patriotic young man Ma Gaitian was a sharpshooter nicknamed "Tianlang". He was initially deceived and used by the "Jueshituan", but after seeing the true face of the organization, he resolutely broke with it. With the help of the bodyguard identity of Fuxing Security Company, Ma Gaitian secretly protected the targets that Japanese spies wanted to harm, and investigated the Japanese conspiracy. In times of crisis, Ma Gaitian and his partners stepped forward and cracked down on a series of conspiracies by Japanese spies in their unique way, such as the attempt to occupy the Huaixi Railway and embezzle Shanghai's national enterprises. These patriotic young people finally gave their youthful blood in the hail of bullets in the 128th Songhu War.