Youth seems to be the most worthy of our memories. At that time, we loved desperately, but hurt ourselves and others. We also had sweet dreams, lost ourselves, were full of curiosity about the real society, but were vaguely afraid... No matter how our youth withered, what remained in our memories was the best time that belonged only to us. Three girls, Ye Suxi, Shao Qingchu and Song Xibao, who have just entered college, have different personalities and family backgrounds. In their best years, they accompanied each other, faced the ups and downs of life together, and grew up together. As time goes by, what direction will their future relationships and lives take?