Lin Wan, a gentle and tough librarian, is used to guarding the old days alone.
Su He, a cold and affectionate young scholar, left without saying goodbye seven years ago, leaving only a paper crane with the words "Waiting for my return" written on it.
During the seven years, they each experienced ups and downs in life. She took care of her seriously ill mother alone, while he went to a foreign country and experienced disillusionment in his marriage. Every year on her birthday, she receives an anonymous paper crane with a year of waiting written on its wings.
In the seventh year, he suddenly returned. On the last day when the old library was about to be demolished, he placed the seventh paper crane in her palm: "I'm still waiting for you."
This time, can they transcend seven years of time and regret and hold each other's hands again?
The paper crane holds the light, it's not too late, this time, I will wait for you.
Concept: About "waiting" and "courage"