Ling Xi, heir to the Mystic Sect, fails her tribulation and transmigrates into the body of Su Qingyuan, the sole survivor of the Su family, which has been massacred.
She wakes to find herself in a deadly predicament, but escapes with the scant spiritual power she has left.
By chance, she encounters Prince Jing, Xiao Jue, who is beset by deathly energy. She offers to cure his chronic illness in exchange for a pact that binds their lives together, drawing her into the treacherous currents of court politics and a bitter blood feud.
With her Mystic Sect skills in medicine, poison, and tracing the source of things, Su Qingyuan repeatedly helps Xiao Jue survive one crisis after another. They go from testing each other to relying on each other with their lives, and affection gradually blossoms between them.
After countless twists and turns, they gather the spirit crystals, seal away the progenitor, and join hands to build a golden age.
She looked angry and laughed. Mistress, do you remember that you are still a cultivator? When the hero asked for your help, how did you end up at the bottom, a prince? You, the person who healed him, got a bowl of rice, a vegetable, and a bowl of poisonous chicken soup. The chicken soup was made by someone else to kill her. It means that the prince gave you a vegetable and a meal. How poor must you be? You are still a cultivator. The food in the cell is better than yours.