"Zach and Zoe are camping with their parents when a girl at another campsite wanders off. When the problem-solving duo spot the girl in the distance, they know they have to help her. But it's goiing to take all the twins' smarts and know-how to rescue the lost camper and get back safely. From the threat of forest fires to the fear of bears, the twins are in for a wet and wild trip!" --Back cover.