Xia Mian, a girl from Su City, travels alone to Xia City for a short summer getaway. An encounter at a tattoo shop brings her into contact with Zhou Ran, the shop's tattoo artist, along with Lao Lu, Zhuang Zhong, the adorable Pi Tao'er, and Shui Cao. Lively seafood gatherings, evening breezes by the sea, and motorcycle rides through the streets fill the days of these young people with a relaxed, down-to-earth warmth. Gradually, Xia Mian is touched by this vibrant group, and an innocent, budding affection quietly takes root in her heart. But the height of summer is fleeting, and the vacation will eventually come to an end. With the summer days in Xia City slipping away and her return date already set, what will become of the feelings quietly growing amid these little moments of everyday life?