The discarded empress died after drinking poison in the cold palace. When she opens her eyes again, she has returned to the beginning of her time in the palace, now a lowly cleaning maid. Xu Wanning, who had caused her death in her previous life, is standing among the candidates for palace selection, smiling as she dreams of becoming empress. This time, Shen Qingluan will not compete for favor or curry anyone’s favor. She has just one goal: to return, untouched, the cup of poison Xu Wanning once handed her. But after carefully plotting her way to the end, she discovers that it was not only the harem’s vicious infighting that brought her down in her previous life. There was also an old imperial case, buried in blood for ten years.