Lin Sangsang transmigrates into a doomed, vicious supporting female character in an original novel. Right at the start, she mistakenly swallows twin gu belonging to the unhinged villain Lou Qi, causing all her physical pain to be transferred to Lou Qi. To avoid being dragged into death by her pain, Lou Qi is forced to keep her safe. Yet, after being redeemed by her time and time again, his mindset shifts from wanting to kill her to: Anyone who dares touch her is making an enemy of me, Lou Qi!