On Emily's first day of summer vacation, the possibilities seem endless-until a thunderstorm arrives. It's too wet and rainy to play outside with her friends. Even worse, the thunderstorm has knocked out the power. That means no lights-and no television!

When Emily thinks that there is simply nothing for her to do, her mother comes up with an idea. Since she can't play outside, and there's no electricity for the television, maybe she can sort through her clothes. Anything that doesn't fit can go into the box for charity. Emily's mom brings her a box to get her started.

But as she looks at the box, her imagination takes over. The box is transformed into an airplane! She runs through the house and gathers the tools she'll need to take flight. What incredible adventures are in store for Emily now?