Yun Xiaoxiao, a hit screenwriter in the modern era, suddenly finds herself transported into the historical romance script she wrote, becoming Yun Xiaoxiao, a supporting female character destined to be framed into losing her chastity on her wedding night and drowned in a pond. Armed with a white jade brush that can rewrite the plot, and with her inner thoughts audible to certain people, she immediately turns the tables on the scoundrel and wicked woman who plotted against her. Unexpectedly, all her thoughts are overheard by Xiao Xuan, the powerful Prince Regent, whom she happened to save six months earlier. Determined to rewrite her cannon-fodder fate, she joins forces with the regent and uses her foresight as a screenwriter and her ingenuity to tear apart the scheming fake heiress in the household battles, overthrow the Empress Dowager's faction at court, and fill in the plot holes she dug herself, rising from an easily bullied supporting character to become the Prince Regent.