Xiang Dong Nan was once a hugely popular celebrity, until he reaches a point in his career and gets blindsided by ugly and career-damaging rumors. He gets tricked by his assistant and the principal of a secondary school into becoming a teacher under the guise of a fake reality show, as a plan to recover his image. When he arrives enthusiastically to class, he meets his colleagues - English teacher Su Qi and mathematics teacher Chen Liu San.
