Su Wan devotes herself tirelessly to taking care of her family, yet her mother-in-law constantly criticizes and mistreats her. Her husband, Chen Kai, appears to be a devoted family man, but is secretly having an affair with Zhang Meng. Sensing something is wrong, Su Wan quietly gathers evidence. When her mother-in-law becomes seriously ill and is hospitalized, Chen Kai neglects her care. Despite their past conflicts, Su Wan stays by her mother-in-law's side day and night, deeply moving the older woman with her sincerity. When Zhang Meng calls to provoke her, the mother-in-law nervously tries to hide the truth. Su Wan then discovers that her mother-in-law has known about the affair all along and has even helped cover it up. Heartbroken, she decides to divorce Chen Kai. Having finally come to her senses, her mother-in-law openly supports her daughter-in-law and turns against her own son. In the end, Chen Kai's scandal is exposed, leaving him abandoned by everyone. His mother then gives all her family wealth to Su Wan. This drama overturns conventional mother-in-law and daughter-in-law stereotypes, blending emotional heartbreak with healing.