Zhao Qiangzi (Kim Hee Seon is acted the role of) used to be a bad girl who is afraid of dominating one side, now, she has already "washed her hands" and has hidden all her edge and become a mother. What Zhao Qiangzi did not expect is that his daughter Wu Yalan (Jin Yuzhen) unexpectedly 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 unexpectedly chose silence. Zhao Qiangzi, who never played cards according to common sense, came up with a plan. in this way, she moved into her daughter's class and became her daughter's classmate. Campus life full of conflicts began, but Zhao Qiangzi, who wanted to solve the problem, became the biggest problem. Here, Zhao Qiangzi not only needs to face criticism and pressure from the students, but also inadvertently discovered the secret of the school consortium.