Ming Yueyi is a transmigrator trapped in a time loop within the world of the novel The Senior Brother's Immortal Path. For nine previous lives, she served as cannon fodder, ultimately being sacrificed by the male protagonist, He Wujiu, to refine his sword during his cultivation of the Wuqing Dao. In her tenth rebirth, having severed her emotions to survive, she devises a new strategy: instead of merely avoiding her fate, she intends to kill He Wujiu to break the cycle and ascend beyond the laws of the Heavenly Dao. She returns to Qingyun Zong after a mission to exterminate snake demons in Baihua Gu, carrying the lingering scent of their blood, which attracts supernatural serpentine entities to her cave dwelling.
Upon her return, Ming Yueyi learns that her master, Juezhen Jianzun, has taken in a new junior brother, Pu Yuemin. Pu Yuemin is a genius with terrifying talent, possessing a cold, snake-like nature that contrasts with his gentle, saintly exterior. During a medical examination, Ming Yueyi accidentally engages in Divine Communion with Pu Yuemin, entering his spiritual sea with her Benming Faqi, a golden lotus. The encounter triggers a intense, involuntary spiritual connection that leaves both weakened. Pu Yuemin, who has been waiting for her across lifetimes, reveals his true demonic nature, harboring an obsessive, possessive desire for Ming Yueyi. He is a snake demon who views her as his destined companion, while she remains unaware of the depth of his fixation.
The sect is simultaneously plagued by Swamp Butterfly Demons that have infiltrated the disciples by parasitizing their bodies. Guan Qingyun, a junior sister who harbors a long-standing rivalry with Ming Yueyi, attempts to force Dual Cultivation with Pu Yuemin and is subsequently imprisoned on the Repentance Cliff. Despite this, Pu Yuemin’s charismatic and saintly persona captivates the entire sect, drawing the admiration of peers and seniors alike. He Wujiu, the male protagonist, remains the central figure of authority and the primary obstacle to Ming Yueyi’s plans. He continues to treat her with gentle camaraderie, unaware that she is plotting his demise.
Ming Yueyi navigates the treacherous social dynamics of the sect, maintaining her facade as a caring senior sister while secretly preparing for the confrontation with He Wujiu. She observes Pu Yuemin’s growing obsession, noting his snake-like pupils and his desire for repeated spiritual intimacy. Meanwhile, He Wujiu’s cultivation advances rapidly, and he begins to suspect underlying threats within the sect. The narrative establishes a complex triangle of manipulation: Ming Yueyi seeks to use He Wujiu as her sacrifice, Pu Yuemin seeks to possess Ming Yueyi, and He Wujiu remains the oblivious protagonist whose path to godhood depends on the very sacrifices Ming Yueyi now intends to reverse. The story concludes with the sect on the brink of a larger crisis involving the great demon prophecy, setting the stage for Ming Yueyi’s ultimate gamble against the established plot.