Septuagenarian richest man Lu Zhenting lived incognito, putting his grandson-in-law Lin Ziyao to the test through "poverty upbringing," and signed a permanent residence right contract when transferring the ten-billion-yuan courtyard house. After marriage, granddaughter-in-law Su Manni revealed her true nature, settling the old man in the utility room, wanting even to sell the house for fifty million, and planning to send him to a nursing home. In the midst of his chilling disappointment, Lu Zhenting revealed his identity; his old friend Huo Jianguo brought family trust absolute penalty clauses to ascertain that Ziyao was not of blood relation, and that the true grandson was the apprentice A Cheng. Triggering double compensation due to breach of contract, a debt of one hundred million pressed down overhead. The courtyard house returned to its owner, Ziyao and his wife were confined for life to do hard labor at that nursing home to pay off the debt, and A Cheng acknowledged his ancestors and returned to the family clan.