Zhao Qiangzi (played by Kim Hee-sun) used to be a bad girl who was afraid of dominating one side, but now, she has already "washed her hands in a golden basin" and has hidden all her edges and become a mother. What Zhao Qiangzi didn't expect was that her daughter Wu Yalan (played by Jin Yuzhen) became a victim of campus violence, and what made Zhao Qiangzi even more sad was that when she encouraged her daughter to seek justice for herself, her daughter chose to remain silent. Zhao Qiangzi, who never played cards according to common sense, came up with a plan, and in this way, she settled in her daughter's class and became her daughter's classmate.　　The campus life full of conflicts has begun, and Zhao Qiangzi, who wants to solve the problem, has become the biggest problem himself. Here, Zhao Qiangzi not only needs to face criticism and pressure from students, but also inadvertently discovers the ulterior secrets of the school consortium.