This summer, Xia Wei, a quiet girl, met Pei Anyian, an indispensable boy in her life. Pei Anyian, who is familiar with everything, knew that Xia Wei could not forget Jing Liang, but he would rather be a vulgar character like a knight and stand silently behind Xia Wei. Jing Liang, who was supposed to be the other protagonist of the story, was obsessed with finding his sister. But this story is bleak, can the sunflower-like girl Jiang Xiankui be able to bring back the support behind Xia Wei? However, the appearance of Jing Liang's sister, Nai Ran, who was caught in the gaps in the story, brought about an inevitable disaster. In this huge summer, the confused and confused youth is quietly unfolding. . . . .