In 1990, college student Ing, who accidently gets pregnant, returns to Lishan to spend the summer with her father. Ing notices the conflicts between her father and the farmers. She meets a young farmer Wen, and affection slowly grows between them. As summer ends, Ing leaves, and no one knows what the future will hold. To promote a new fertilizer, Ing's father gets a hot-air balloon, but hard as they try, it just can't fly.

九○年代，大學生阿英從台北回到梨山，在父親和鄰里的果園日常中，學習人際、親近土地，旁觀生意起落和技術變遷，也在颱風天的狼狽中感受到靠天吃飯之苦。父親再婚的妻子待她如至親，但阿英心中的祕密，也許只能對山谷傾訴。

故事背景是三十年前的梨山，犹在读大学的女儿，突然返回梨山老家见父亲，打算住几天就走。性格豪爽却脾气暴烈的父亲与继母有了小宝宝，以贩卖农药维生，正与当地竞争对手发生冲突，争夺代理权，闹得乡里间人尽皆知。