三个在现实中迷失的年轻人，意外闯入一间废弃杂货店，竟然收到来自几十年前的求助信。一封封跨越时空的回信，为彼此解开人生心结，燃点奇迹。 该剧改编自东野圭吾的同名小说。

Five years after her son’s death, Min-young joins a group for women who have lost a child, only to hear someone laughing.