Jiang Heng, the daughter of the censor, hid in the palace as a musician after her family was wiped out. A song called "Three Plum Blossoms" attracted Pei Yan, the commander of the Imperial Guards - he heard the missing sound that only a person who has died can understand. The two teamed up to avenge the powerful Dou family, but found that their enemy was Pei Yan's biological father. He pushed her away with his own hands and walked toward destruction alone. She died in the snow, his name engraved on the dagger. He spent the remaining forty years of his life guarding her grave.