Concubine-born daughter Xie Yingying binds with a bargain-hunting system, while eldest sister Xie Jiaojiao fights to grab good items, leaving behind scraps that are actually fateful treasures. When it comes to marriage talks, the eldest sister trysts with Lu Dingyao, and the two push Marquis Dingyuan's heir Pei Yunzhi off a cliff. The heir is severely injured and paralyzed, and the eldest sister, unwilling to perform a red-wedding ritual to ward off bad luck, schemes to force Xie Yingying to marry in her stead. The Xie family treats Xie Yingying harshly, and she suffers greatly as she marries into the marquis's estate. On the wedding night of the ritual, she uses a spiritual elixir obtained from the system to cure Pei Yunzhi. Pei Yunzhi feigns amnesia to set a trap, uncovering the truth of how Xie Jiaojiao and Lu Dingyao plotted to murder him. Their crimes are exposed and brought to justice, and Xie Yingying completely shakes off her original family, stays with the heir, and reaps her own fulfillment.