In the bustling martial arts hub of Snow Moon City, a peculiar fortune-telling stall captures attention not for its masterful predictions, but for its absurdly young proprietor. Su Hang, a transmigrator from modern Earth with encyclopedic knowledge of this wuxia world's future, sets up shop with a bold promise: accuracy guaranteed or payment refused. Despite his delicate, noble appearance that contradicts the stereotypical sage, Su Hang possesses an unfair advantage—he knows the hidden identities and tragic fates of the realm's greatest heroes before they unfold.

When the masked sword immortal Li Li Hanyi approaches, Su Hang effortlessly dismantles her secrets using nothing but his prior knowledge of her lineage, instantly earning a reputation for divine insight. As word spreads through the jianghu, nobles, warriors, and desperate souls flock to his stall, seeking to alter their destinies. However, Su Hang's true goal extends beyond mere profit; he aims to rewrite the tragic scripts of beloved characters, starting with convincing the grieving Lady Guo to embrace a new future.

In a world governed by rigid fate and martial prowess, one young man's foresight becomes the ultimate cheat skill.