Modern daughter-in-law Summer Lane travels back to 1976 to save her paralyzed husband and mistreated father-in-law. Harassed by a vicious stepmother, greedy second uncle, and local village bullies, she uses modern knowledge to outsmart them. During a flood, she rescues her pregnant mother-in-law and unborn husband. She rewrites her in-laws' fate, lifting the family from poverty to wealthy status, earning a happy family reunion.