At the end of Guangxu in Qing Dynasty, Cixi wanted to give the national treasure gold inlaid with jade to ministers of various countries. However, on the eve of the delivery of the treasure, a treasure theft occurred in the Forbidden City. Wu Hegan, the duty officer of the Ministry of Internal Affairs, and Cheng E, the bodyguard of Qingmen, decided to take the blame. The doctor of the Ministry of Internal Affairs, Xin, ordered to check the lost things, only to find that the gold inlaid jade was not stolen, and it was a national treasure living abroad. Xin hid the gold inlaid jade, but this move was discovered by Cheng E. Wu's head fell to the ground, but Cheng Yi didn't want to take people to raid Xin's family, but Xin had hanged himself, and the descendants of Xin's family knew nothing about it. Cheng Yi failed, and Jin Xiangyu's whereabouts became a mystery.

In the fourth year of the Republic of China, Xin Ju, the son of Xin's parents, returned to Gong and Drum Lane. He revived his family business and attracted his sons Cheng E and Cheng Dayu, who were obsessed with treasure hunting and physically disabled. The two sides fought wits and never won. When the situation was turbulent, Xin married his younger brother Xin Shuheng's favorite concubine, and the lost uncle Heng was forced to marry Wu Jiaying, and the two brothers turned against each other. Cheng Dayu ingratiated himself with the commander of Beiyang Military Division, but failed because of Xin's insistence and his father's protection. Zhu Ying, who was emotionally neglected, threw herself into the arms of heavy rain with the hope of happiness, but died in the rainy night of labor. New Han Shu is reluctant to give her child to Xiaocui, a servant girl. The warlords scuffled and the people were in hot water. Teacher Wu died and Cheng Dayu went into exile. Many years later, when he took his daughter Yiling back to Gonggu Lane, things had changed. He told his elderly father Cheng Jiayou. The feud between Cheng, Wu and Xin began to extend to the third generation.

In the era of eight years of anti-Japanese war, three years of civil war and bullets, grievances gradually changed and faded. Xin sacrificed his life to protect the treasure for his father's promise. Cheng E, who is very old, seems to have a heart-to-heart relationship with him and help him secretly. They tacitly guard the national treasure in troubled times.

* * * After the liberation of China, the people ushered in a new life, the motherland was reborn, and the time for the national treasure to reappear finally arrived. When the country's heavy weapon that has been dusty for 50 years is newly held, when the gold inlaid jade blooms again in the sun, Cheng E, who got his wish, died with a smile.