Hong Xiao, the head of the Canglan Sect, was ordered to take over the task at the critical moment. In order to protect the survival of the sect, he forced Qing Yu, who was rumored to be carrying a rare talisman but was frail, to marry him as his son-in-law. Her red clothes were stained with blood, and her sword protected the sick man. She originally thought it was just a deal where each got what he needed, but during the days and nights they lived together under the same roof, she glimpsed the secret behind his pale face - he used the paper crane folded from her red silk hairband to slay demons, the runes on his fingertips could mend ancient talismans, and the sound of coughing blood contained old wounds that had not healed for hundreds of years.
When the rival sect provoked a provocation and the paper crane flew away with the red silk, the dust-laden memory of the red silk suddenly came to life: a hundred years ago at the Well of Gods and Demons, the boy in white tied a tourniquet for her when she fell from the cliff. The way he wrapped the cloth around his fingertips was exactly the same as Qingyu's origami crane at the moment.
It turns out that this "forced marriage" was his journey spanning a hundred years; the so-called "sickness" was the price he paid for losing his life to protect her. The red silk ties not only the paper crane, but also an unbroken bond between two generations. When the conspiracy of the Blood Talisman Sect is revealed and the seal of the Well of Gods and Demons is loosened, she holds the sword and he draws the talisman. The red clothes and the white clothes are intertwined. On the fateful battlefield, they continue to write a deep love that has been delayed for a hundred years.
