Only Time Should Not Be Taken Lightly

The young girl, Gai Gai, and Wei Guangyin once lived in the same orphanage, sharing a deep bond. However, due to various reasons, they were forced to part ways. On the day the young Wei Guangyin was taken away, in order to recognize each other in the future, the two embarked on a journey to find the Lost Valley Tree. An accident occurred along the way, leading them to be separated. When they meet again, he is a depressed boy from a distinguished background who has been in a mental health facility, while she is a cheerful girl living in someone else's home. As their lonely hearts draw closer, unexpected incidents follow one after another.