Liu Xian will always remember the loneliest and bluest of summers when she was 15 years old. When her mother goes to Africa to provide medical aid as a doctor, she is thrown into the care of her father who has been divorced from her mother for many years. Her father’s photo studio is struggling, and he fools around with the widow who works at the front desk all day, ignoring her needs of Xian. She feels that she has become an outcast until Jin Mingmei appears like a ray of shining light and illuminates her lonely life. Mingmei’s wanton youthful vigor attracts Liu Xian and leads her into an unknown and strange world. During this restless summer, the ignorance and impulse of youth leave an unforgettable mark on Liu Xian’s life.