Full-time mom Elena Kong grew up under the strict discipline of first-generation tiger mom Michelle Yim. She unintentionally formulates a series of monster-style rules for her two daughters, causing resentment from her elder daughter (Kamen Kong). Mother and daughter are constantly at war with each other. Husband Ben Wong normally plays the role of mediator to ease the tension, but he is facing a mid-life crisis and the temptation to have an extramarital affair. The couple head towards separation... Elena is not just strict at home, she is also tough to outsiders. She fights bitterly with Koni Lui at the parent-teacher association. Luckily, Sharon Chan, a fearless disciplinary mistress, capably handles the situation and eventually turns the two tiger moms into friends who share with each other the little known hardships of being a tiger mom. Elena wholeheartedly forges a path for her daughter to become a talented woman, but discovers that Kamen is dating Sharon's younger brother, Matthew Ho. Elena joins forces with Sharon to break up the young couple. A secret that has been kept for over ten years is exposed, driving the mother-daughter relationship to the brink of collapse...