At a time when tech entrepreneur Qin Zimo is facing bankruptcy, his father Qin Canghai, who has been missing for five years, returns in a demented and down-and-out state. Facing his brothers and sisters seizing his assets, his mother-in-law forcing a divorce, bullies demanding debt collection, and peers encircling and suppressing him, Qin Zimo and his wife Su Qingwan consistently guard their family affection and bottom line. Qin Canghai, who is secretly sober, acts crazy to test human hearts on one hand, while collecting evidence and planning a counterattack on the other. As the truth of the tens of millions of promissory notes and the hundred-billion-dollar fund is uncovered, the greedy ones are successively brought to justice, and Qin Zimo grows from adversity into a truly mature helm of the enterprise.