Jack always feels unhappy, because when he sees others have the things that he doesn't have, he is lost. Jack's parents give him everything and they are not poor, but Jack is still not satisfied. One day, a classmate tells Jack that many students envy him, because he has a good family. Until then, Jack becomes happy and knows how lucky he is.

杰克总是感到不开心，因为当他看到别人有他没有的东西的时候，他就会感到失落。杰克的父母给了所有他想要的东西，而且他们家庭也不穷，但是杰克仍不满足。一天，一个同学告诉杰克，许多学生都羡慕他，因为他有一个好家庭。在那之后，杰克变得开心起来了，知道自己是多么的幸运。