Han Xiaona is a junior girl at Shanghai F University. When she entered the university, she was a simple, kind and childish little girl. Three years of growth and ups and downs have made her mature and complex. Although she is still kind deep in her heart, in order to protect herself and get the life she wants, she begins to learn to hide her true emotions and fight, rob and fight with all her heart. Sweetness and sorrow, happiness and sadness, frustration and helplessness, look for your footprints in her world...