Alistair Shaw poisoned. Emperor orders Sterling daughter to marry him. Clara refuses, forces Celia to marry. Celia marries to investigate mother's death, facing Alistair's suspicion, Clara's frame-ups. Celia saves Alistair. They grow affectionate, uncover PM Chow's faction, expose Clara and mother's crime, leading to Sterling Clan's downfall. PM Chow's coup; Alistair suppresses, Celia treats. Alistair cured, relinquishes power; Celia reopens Rejuvenation Valley. Marriage celebrated.