The majestic Qing Dynasty entered the Kangxi and Qianlong eras. Emperor Qianlong (played by Ni Dahong) enjoyed the foundation created by his grandfathers and pushed it to a more glorious and flashy peak. At that time, the country was peaceful and the people were safe, the treasury was full, Yangzhou, the land of fish and rice, was the richest in the world, and the Lianghuai salt industry supported a quarter of the court's fiscal revenue. In order to support the war, the emperor ordered the Lianghuai Salt Administration to urge the military, but the salt merchants shirked their responsibilities in every possible way, and even Wang Chaozong (played by Zhang Jiayi), who was an old friend of the royal family, refused to cooperate. The new salt administrator Akzhan (played by Zhang Zhijian) was ordered to take the task in a critical situation. After arriving at the local area, he found that the salt merchants had a deficit in the treasury. He realized that the salt merchants had a secret account book in their hands, which was the trump card for these merchants with many tricks to dare to disobey the emperor's orders. Akzhan, who was resolute in character, acted vigorously, while the Lianghuai salt merchants tried every means and came up with many strategies. Wang Chaozong, who was at the center of the vortex, had to undertake the dangerous task of mediation. The dark secrets hidden in the account books gradually came to light, and all the stakeholders were involved...