Modern woman Su Qinghuan accidentally time-travels to the Song Dynasty, becoming the debt-ridden and manipulated manager of Xunhuan Pavilion. Faced with oppression from the powerful, rigged account books, and the trapped fates of women, she boldly reforms with modern business thinking, turning the brothel into the 'Starlight Grand Theater' and creating the Song Dynasty's first girl group. Through public performances, tours, and innovative management, she successively defeats the Wang family and behind-the-scenes forces, moving from the entertainment industry to people's livelihood commerce, founding the Tianxia Commercial Alliance, publicizing prices, opening up trade routes, and supporting small merchants.