Bricklayer Chen Dashan, burdened by a 15-year-old false accusation and old injustice, unexpectedly wins an after-tax lottery jackpot of over 180 million, publicly claiming only a 3 million project bonus. He quietly improves the lives of his daughter and elderly mother, and kindly sponsors the struggling counselor Lin Wanqing. However, his ex-wife, contractor, and greedy relatives take turns coming to demand money, while his former enemy Zhou Hongyuan sets up traps everywhere to suppress him. Chen Dashan founds an ancient architecture company to stay true to his craft, gathers evidence of the past wrongful case, and amidst multi-party maneuvering, the truth of the old case still hides heavy secrets.