 Nick and Annie finally get their chance to do what they had come to Florida for in the first place: search for the mystical manatees. Their quest leads them on an adventure through the untamed wilderness. Aided by clues from Mr. Belcher and a wayward hermit named Trapper Nelson, they make their way up Crystal River. But when they find themselves surrounded by alligators, the professor picks them up in his amazing new Seair Flying boat. It is from this vantage point in the sky that they find what they were looking for.