An aftershock caused by an earthquake twelve years ago made a time-space connection between the young Xiao Li and his childhood. At a class reunion many years later, Xiao Li met Song Qian, a girl who had a crush on him. The secret of his father's disappearance and the memory of an accident caused by a game of hide-and-seek were gradually evoked. In the flowing river, Xiao Li gradually approached the truth in his heart and resisted the oblivion from the present.

外出躲债七年的男人（廖佳军 饰）因母亲的去世，踏上了返乡的路程。在路上，儿时的记忆像梦境一样不断向他袭来。他到曾经的工厂找一位老朋友，找寻当年写给他前妻的一本诗集。城市的别处，三个高中生谈论着关于各自未来的计划。在火车桥下游荡的男人，儿时的小男孩，高中生的命运在冥冥之中被河流牵引，而记忆被重新唤起。夜幕降临，男人去到了桥下的舞厅。在那里，他遇到了一个陌生的女人......