On the day of the Crown Prince's wedding, he publicly admits that his cousin, Yun Heng, is pregnant with his child. Shen Si, reborn into the past, no longer cries or competes for his favor. Instead, she welcomes Yun Heng into the Eastern Palace in grand style, carefully setting safeguards through etiquette, medical records, and witnesses. Yun Heng uses the claim of being the 'Emperor Star' to build influence and plots further accusations, but Shen Si steadily gathers evidence and protects her mother. When labor begins, all the imperial physicians rush to Yun Heng's side, while Shen Si gives birth alone with the help of a midwife to her legitimate firstborn son, who has a red mole on his forehead. Yun Heng, however, loses her child after harming herself with an unorthodox remedy. Evidence of forbidden incense and a star chart finally comes to light, and Yun Heng is brought to justice. Xiao Chengjue finally understands the truth, but it is too late to win Shen Si back.