On a hot summer day, Ronan and his friend Jee bike to the nearby Lilypad Park for a few swings on the baseball field. But when Jee's homer sends Ronan chasing down the ball in the nearby woods, Ronan comes across an abandoned canoe. The two decide to explore the nearby Saskachoo Swamp a little in the canoe, but when the canoe springs a leak and they get off track, the friends will have to figure out how to get back home through the humid swamp. And they'll have to battle insects, mud, snakes, and alligators to do it.