Mrs. Wong knows her husband is carrying on an affair, but for the sake of their marriage and autistic son, she has chosen to silently endure. However, the mistress comes to disturb them, and in the end, Mr. Wong leaves home after a fight. Feeling at a loss and struggling to watch over her son by herself, Mrs. Wong begins to plot ways to take revenge against the mistress, but her plans get discovered by other housewives.