Andy 希望他能讓他父親的夢想成真, 而成為第一個上月球的人, 然而現在的Andy, 對每樣的事情都滿意地不得了, 他喜歡待在他父親的店裏幫忙, 他喜歡打棒球, 並且和一位叫做Onion John的怪咖交朋友, 起初Andy的父親並不樂見如此, 後來也與Andy一樣, 也接受Onion John並也開始資助他, 但是他們父子發現, 偶爾的施惠別人反而會幫倒忙, 這一位Onion John似乎不領情, 一場患難見真情的故事於是發生。本書獲選為1960Newbery金牌獎。
Maybe someday, Andy Rusch will make his father's dreams come true and be one of the first men on the moon. But for now, Andy is perfectly happy with everything the way it is. He likes working in his father's hardware store, playing on the Serenity baseball team, and being best friends with Onion John, the town eccentric. Nobody else seems to understand Andy the way Onion John does. And nobody else understands Onion John at all.
But Andy's father doesn't seem to see how great things are. All he can see is how much better they could be. So, just like he does with Andy, Mr. Rusch starts making plans for Onion John. After all, he says, all Onion John needs is a little help.
But Andy and his father soon learn that a little help can sometimes lead to a lot of trouble, especially when the person getting the help doesn't really want it…