Adapted from the web novel "The Dreamer in the Spring Boudoir" (春闺梦里人) by Bai Lu Cheng Shuang (白鹭成双).
A quirky genius girl named Ji Man Yi loses her memory through an accident, and inexplicably replaced her twin sister and entered the Hou Manor. With her outstanding wits and business acumen, she managed to resolve numerous crisis, eventually winning the favor of Ning Yu Xuan, the cold and arrogant young master of Hou manor.