Lu Hao is a writer born in the 1980s who has been drifting in the north for many years. He meets the kind and simple heroine An Ran at the Erhai Lake. They have the same pursuit in life. Because of the Erhai Lake, they met and got to know each other, and finally separated. Youth, love, life and a series of terms that make young people sensitive have become every one of their life stories, including romance, warmth, reunions and separations.