Brave Lin Ang was backstabbed by his close friend and rescued by a thousand-year witch, with whom he formed a contract. Finding himself reduced to a vessel for the Demon King's resurrection, he fights alongside the witch to clear his treasonous stigma and rescue his younger sister, infiltrating the imperial capital to rally his old subordinates. Ultimately, he is shocked to discover that the mastermind is his mentor, while the close friend who betrayed him turns out to be another chosen vessel.