Gu Yuan, who has been married for eight years, insists on buying the same set of lottery tickets for eight years. During one purchase, a network glitch results in an invalid ticket being printed, and his wife Xia Wanqing mistakenly takes the voided ticket. After the draw, learning that eighty-eight million has been won, Xia Wanqing rushes back to her maiden home overnight, bringing her first love Jiang Yifan to force Gu Yuan to leave with nothing, and the divorce agreement specifies that lottery proceeds belong to the holder. Little does she know the truly winning ticket is in Gu Yuan's hands. When redeeming the prize, Xia Wanqing discovers the ticket is void, and wanting to split the prize money, she is constrained by the agreement.