Qin Chuan and Xie Qiao grew up in the same compound. They have been bickering with each other for ages. Qin Chuan is simple and does not mince words. For years, Qin Chuan and Xie Qiao have missed out on each other. They have both been in different relationships. Having lived through the Wenchuan earthquake, they realize that long-lasting companionship is the most precious love. Qi Chuan always stands by Xie Qiao and will always be her most important friend. No matter where life leads them, they will come together. Theirs is a story about a group of young people seeking their dreams and striving to grasp the opportunities of the times. Adapted from the novel "Once Young" (曾少年) by Jiu Ye Hui (九夜茴).