Peking during the Republic of China.
The undercurrent of the current situation is surging, the Japanese power is ready to move, and the anti-Japanese activities have begun.
The young knight Li Tianran returned from studying in the United States. In order to find the culprit of his master's murder five years ago, he went deep into the alleys of the ancient capital. As his investigation deepens, the battle of wits among people from all walks of life in the capital comes to light. Japanese spies, pro-Japanese elements, former wealthy families, gang bosses, socialites, foreign reporters, etc. Take turns to fight, brewing a stormy situation.
Deep in the alley, in the courtyard, the ordinary people are still living their lives leisurely. From the Mid-Autumn Festival to the Winter Solstice, from the Spring Festival to the Lantern Festival, to the Qingming Festival, to the Dragon Boat Festival... Until the gunshot at Marco Polo Bridge.
