Llewellyn does not like to feel afraid or sad, angry, lonely, or embarrassed. And so he comes up with a brilliant plan: he tucks each of his feelings into jars and hides them away where they won't bother him anymore. But when he gets in trouble in class, Llewellyn finds he needs to put away excitement too. And when joy is quickly followed by disappointment, he decides to get rid of joy as well. After a while, Llewellyn walks around not feeling much of anything at all. And what happens when his emotions refuse to be bottled up any longer?

In this richly illustrated and universally relatable picture book, Llewellyn soon discovers that life is more colorful when he sets his emotions free. And only then, by facing and embracing each of his feelings, is he finally able to let them go.