Modern young man Chen Yu accidentally travels back to the Zhenguan era and possesses a down-and-out noble. He relied on historical knowledge to avoid trouble, used soap and perfume to find a way out, and accidentally got involved in court disputes. Help Li Jing improve his ordnance to defeat the Turks, use criminal investigation methods to clear his grievances, and use new agricultural techniques to relieve the people's difficulties. He fell in love with Princess Changle, but was repeatedly hindered because of his background. He built canals, promoted imperial examinations, pacified the Western Regions, and conquered Korea. He grew from a market merchant to a pillar of the Tang Dynasty, and eventually became a legend. He left a strong mark in the history books and made the prosperous Tang Dynasty even more glorious than before.
