As an official of the imperial court, Su Qingcen, together with his best friend Liu Chenzhou and the medical girl Ye Jinghong, repeatedly solved strange cases. From the poisoning case in the Capital Hospital that revealed the bronze medal with the word "Yi", to the imperial examination fraud case that revealed corruption in the Ministry of Rites, to the theft of the Zhenbao Pavilion that revealed the "dark net" conspiracy led by Xuanying Pavilion, four tokens engraved with "Wolf", "Medicine", "Steal" and "Shadow" connected together a shocking plan to subvert the government.
After the remnants of Xuanying Pavilion were wiped out, troubles arose again in the south of the Yangtze River - white lily of the valley flowers appeared frequently in cases of missing children, and the theft of gold and jade seals added to the mystery. Su Qingcen and his team went deep into Taihu Lake to track down the Lily of the Valley Sect, uncovering the truth about how the cult was being exploited, and cutting off the poison smuggling network in the Jiangnan waterways.
From the center of power in the capital to the misty rainwater countryside in the south of the Yangtze River, they solve unsolved cases with wisdom, protect the people with benevolence, uphold justice in the confrontation between good and evil, and finally bring peace back to the world.
