To Millie, the whole world is unfair. Even though Millie has a loving family and a nice home, she's always miserable. She hates to be told what to do, and when things don't go her way, she complains. Millie finally has enough! She runs away so that she can do whatever she wants to do.
What starts out as a fun adventure turns out to become one disaster after another. Millie ends up on the streets, scared, without money, food, and a place to sleep. Desperate, she steals candy and gets caught by a police officer. When her parents are contacted, they are overjoyed and welcome her back home. Armed with a new appreciation for her former life, Millie becomes the happiest girl in the whole world.