A street vendor travels to ancient times with a family heirloom and becomes a battlefield genius.

Chased by debt collectors, street vendor Qin Fang accidentally travels through time to the ancient battlefield city of Pi with a family heirloom. He is mistaken for a spy from Cao's army. He wins the trust of Lord Lü Wenhou, the city ruler, with modern items like a telescope and compressed biscuits, and promises to solve the food shortage amid the siege. Later, he is framed by General Wei yet protected by young lady Lü Qinghe. Using his knowledge from the modern world, he navigates crises, and gradually uncovers the conspiracy of hidden spies in the city. Subscribe for more exciting episodes! #RevengeDrama #PlotTwist #GreatSeries #Storyline