After Qing Beimo is reborn, she remembers her previous life: the young general who escorted her all the way from the northern frontier and protected her, the handsome little eunuch who stood by her through every hardship in the palace, and the young chef who cooked delicious food for her after she was banished to the Cold Palace. Because each of them had been close to Qing Beimo, the treacherous emperor had them all executed.
In the end, the hypocritical emperor who used and tormented Qing Beimo had her executed, too, then stripped her of her title.
In this life, Qing Beimo has only two tasks: first, bear the emperor a child, then make sure the despicable emperor dies. And not just dies, but dies a horrible death.
But after being reborn, Qing Beimo discovers that the young general is him, the little eunuch is him, and the young chef is him, too.