A spirit jade from the primordial era was lost in the mortal world, prompting both the Divine Realm and the Demon Realm to search for it desperately. The Demon Realm could not descend into the human realm in person, so it sent an emissary to appoint an agent among the mortals. The agent's mission was to find the spirit jade and deliver it to the Demon Realm. The emissary chose a family surnamed Yang, causing the Yang family to suddenly prosper. After growing wealthy, the Yangs committed countless misdeeds, yet under the spirit jade's protection, the more wicked they became, the more prosperous they grew. After Yang Qiang rose to power, a string of outrageous moves finally provoked the fury and thirst for revenge of many people. Thus began a grand, complicated tale of a struggle for the spirit jade and a quest for vengeance.
