It's the night of the annual Autumn Equinox Festival, when the town gathers to float paper lanterns down the river. Ben and his classmates want to find out where those lanterns go and make a pact: No one turns for home. No one looks back. It isn't long before the pact is broken by all except for Ben and Nathaniel, the one kid who just doesn't seem to fit in. Together they will travel farther than anyone has ever gone, down a winding road full of magic, wonder, and unexpected friendship.