The movie "It's for Your Own Good" follows the three sisters-in-law as they hatch a plan to break up the relationships their sons have with their new girlfriends. Clara, Matis, and Nena each have different reasons for disliking the women their sons are dating, and they come together to sabotage the relationships.
Clara, a high society woman, disapproves of her son's girlfriend because she comes from a lower social class and doesn't fit into their elite circle. Matis, a professional woman, is still grieving the loss of her husband and believes that her son's girlfriend is taking advantage of him. Nena, a naive housewife, worries that her son's girlfriend is not good enough for her son and wants to find someone more suitable for him.
The three women use a variety of comedic and mischievous tactics to try and sabotage the relationships, but their plans often backfire and lead to humorous situations. As they work together, the women also bond and learn to appreciate each other's perspectives and strengths.
The movie explores themes of family dynamics, difference in social status, and the lengths that people will go to in order to protect their loved ones. As the plot unfolds, the women find themselves in unexpected situations and have to confront their own biases and assumptions about the women their sons are dating.
Ultimately, the movie ends with a heartwarming resolution as the women come to realize that their sons' happiness is what truly matters, and they learn to accept their sons' choices in partners, despite their initial reservations.