"Sit Down!" is all Luna seems to hear - from her parents, her sister and even her teacher. But what they don't know is that Luna has a goal, and that goal is to be the best dancer she can be. But being the best requires lots of practice. So Luna practices everywhere - at home, at school and even at the grocery store.

As Luna puts all of her practice to the test, she realizes that, "Sit down, Luna!" isn't the only thing she hears! And Luna learns that by being herself, she can accomplish great things.