Wade Walsh time-travels, becoming the live-in son-in-law of the Summers family. The original abused wife Claire Summers, colluding with her best friend, Coco Zhu, to seize family assets. Wade, with math Ph.D. and TCM expert skills, protects Claire Summers. He resolves crises: family infighting, business conspiracies, casino traps. He helps the Summers family expand their business, winning Claire Summers's heart, achieving career and love success.