A big dream. In the junnan Police College, Cheng Ting, unsmiling and handsome, is a junior student. As the captain of the military training team, he met yongman, a young, energetic and brave girl in the freshman criminal investigation team in 2017. In this love, yongman sacrificed his life to pursue, and failed to achieve his wish. Come back to life, where should their love go! Is it youth grief or healing the rest of life.