The female protagonist discovers the affair between her father-in-law and her best friend, Xiao Su. She is falsely accused in return by Xiao Su, and her clueless husband and mother-in-law both defend Xiao Su. In a fit of anger, the female protagonist leaves, only to be run over and killed by her best friend's car. Traveled back in time, she decides to quietly collect evidence, scare her father-in-law and "plastic best friend," and uses super glue to make them humiliate themselves in public. At her son's hundred-day banquet, she exposes their affair. After discovering the truth, the mother-in-law realizes her own stupidity and joins forces with her daughter-in-law to take down the scumbag and the mistress.
