Ye Shaobai, the third young master of the Ye Family Escort Agency, lost his mother in childbirth. His father, unable to let go of this grief, only allowed him to study literature, not martial arts. However, he was a sword prodigy. His aunt, Qing, noticing his frail health, unintentionally gave him a book of meditation and qi cultivation techniques—a martial arts treasure lost a century ago. Ye Shaobai secretly practiced according to the book's instructions, his internal energy growing increasingly powerful, and even his chronically weak constitution gradually improving. One day, he got into a fight with his second sister, Ye Mengjiao. When his father heard of this, he was furious and wanted to destroy the manual. Qing explained the manual's origins and pleaded for it to be kept. Through Qing's intervention, Ye Shaobai was allowed to secretly study it, and the wheels of fate began to turn wildly.