A week ago, Qingchuan came to Liancheng, a crowded place, because of his father's promotion. They met their childhood friend Xie Tianyu, got to know Qihen and Mengli, and began to interpret their ordinary and wonderful lives in their senior year of high school. There was hazy love, witty humor, intense study life, and the generation gap between them and their parents. All these involved them in endless confusion. Standing at the crossroads of life, where should everything go? The future seemed so far away. . . . .