普通青年刘十三（彭昱畅 饰），在城市中迷失自我，被外婆带回了故乡，一个云边的小镇。童年好友程霜（周也 饰）和外婆陪伴着他，刘十三度过了一段平静的时光。他沿着祖祖辈辈留下的痕迹，认真倾听小镇的呼吸，在伸手能摸到云的小卖部，在高山与大海之间，在院子的桂花树下，逐渐走出往日的迷惘。有些人 刻骨铭心，没几 年就遗忘。有些人不论生死，都陪在你身旁。

Ordinary young man Liu Shisan (Peng Yuchang), who has lost himself in the city, is brought back to his hometown, a small town by the clouds, by his grandmother. Accompanied by his childhood friend Cheng Shuang (Zhou Ye) and his grandmother, Liu XIII spends a peaceful time. He follows the traces left by his ancestors, listens carefully to the breath of the town, and gradually comes out of his past confusion at the kiosk where he can reach out and touch the clouds, between the mountains and the sea, and under the osmanthus tree in the courtyard. Some people are engraved in their bones and forgotten within a few years. There are some people who will stay by your side no matter if they live or die.