Sang Yun transmigrates and is married off to a frail prince, Ji Huaixi.
The prince is the Demon Lord, sealed away a thousand years ago. He has his eye on Sang Yun's pure yin body and wants to sacrifice her.
On the day Sang Yun is to be sacrificed, Ji Huaixi sheds tears of blood. They say demons have no feelings, but Ji Huaixi loves more deeply than anyone.
His bones may break and his blood may flow, but through life and death, he will never turn back.