Ban Chi (played by Chen Shaoxia) has lived on an island far away from the city since she was a child. Different from the hustle and bustle of the city, Ban Chi, who lives here, also yearns for the bustle of the city, so what she looks forward to most is summer. Every summer, young people from the city will visit this island for vacation. Each of these people has their own concerns and secrets. This summer, Ban Chi's brother A Wei (played by Tony Leung), who had left the island to work and live in Hong Kong, suddenly returned to the island with scars on his arms. The brother and sister who had not seen each other for many years had a lot of estrangement, and his brother's concerns became the secret that Ban Chi wanted to know most. Soon, Ban Chi discovered that there was a loner woman (played by Ye Yuqing) among the group of tourists. She was mature and charming. Unlike the class of young students, she did not talk to others every time she came to the island. Finally one day, Ban Chi discovered that this mysterious woman came for her brother...