Penelope Crumb is not having a very good week. First she accidentally comes to school dressed as an elephant. Next, in gym class she's made to dance with a boy who is known as Lippy Gordon because of how sweaty his lip is. Penelope is mortified. And she's extra mortified when she discovers that Lippy doesn't want to dance with her either!

When Grandpa tells Penelope that he sings to the moon when he's having trouble, Penelope grabs onto this plan. But sometimes you need more than the moon to fix things...