Guo Ci, the only survivor of the Guo family, was rescued by a mysterious elder in the murder case. Since then, he has contained a powerful unicorn in his body. He has changed his face and disguised himself as Huang Si who made a living by trickery, and hid in a small inn.

"Master Connection" Li Nian is a well-known corpse stitcher in the town. One night in the middle of the night, he accidentally went into a deserted village and stitched up a headless female corpse. He actually helped the hydra demon Xiaomei to resurrect with the corpse skin, forming a relationship with a human and a monster. . Since then, serial murders have occurred frequently in the town. The victims are all bloody and shriveled, and their deaths are horrific. Li Nian and his wife did not know the inside story and kindly took in the orphan girl Xiaomei. However, she took advantage of Mrs. Li's gentleness and kindness to seduce Li Nian every night.

An imperial guard searches for the truth behind a conspiracy that framed him and his partners. The proof of his innocence lies with a wanted woman named Bei Zhai... but will she reveal what she knows? In this intense prequel to BROTHERHOOD OF BLADES, the only thing he can truly trust is his sword.