17-Year-old Lu Zhixing, like most people of her age, has a crush, a small vision for the future, a large stack of test papers and review books, and lives her orderly life... Until she met the 28-year-old, she never knew that she could still have such big thoughts about her teacher. 28-Year-old Gu Linxi, like most people of his age, has his own career, a bit of the past that belongs to two people, and has seven aunts and eight aunts to worry about his marriage. He lives his life peacefully... Until he met the 17-year-old, he never knew that students could be such a headache.