Jiang Xiaobai has recovered his memories, yet Tong Li cannot summon the courage to meet him. Individually, they examine the truths that have lingered for a decade—regarding the group September, to which Jiang Xiaobai and Mu Xiyu devoted their youth; concerning the love triangle among Jiang Xiaobai, Mu Xiyu, and Tong Li; and about the painful events that united the trio and ultimately caused the tragic incident on the day Tong Li departed for America. In the end, can Jiang Xiaobai and Tong Li reconcile with their deeply rooted past and step toward a shared future together?