Moon Tonghyun (played by Song Hye Kyo), who dreams of becoming an architect, chose to drop out of high school because he was bullied by Park Soo-jin (played by Lim Ji-yeon) and Jeon Jae-yun (played by Park Sung-hyun). A few years later, Park Soo-jin became the host, married the chaebol Ha Do-ryeong (played by Zheng Xingyi) and had children. However, after the child entered elementary school, Moon Tongjun, who had been dormant for many years, appeared in the school as the child's class teacher. With the help of Zhu Rugang (played by Li Daoxian) and Jiang Xiannan (played by Yan Huilan), Tongwen Wen, who has survived for many years, embarks on a carefully planned revenge to make the perpetrators of bullying pay the price for their evil deeds.
