Everyone thinks Charlie is nothing but trouble, since bad things tend to happen whenever he's around. But Gracie knows better.

Now both kids have the chance to fly with their other cousin Eddie from Seattle to San Francisco without any adults. Gracie's father isn't sure the trip is a great idea, but Gracie's not worried. What could go wrong?

Then things begin to go wrong...very wrong! Is it just Charlie's bad luck following them? Or have Gracie and her cousins stumbled into something more dangerous than they could have ever imagined?