Cody and Demetrius are getting married! Along with the usual wedding details—venue, flowers, catering—they also deal with a sneaky otter and a growing guest list. The big day goes off without a hitch, and Cody whisks Demetrius away on the honeymoon he planned all on his own. When they arrive at the town of Hempstead, Cody is dismayed to discover the small town gets much of its tourism from the legend of Esther, a Loch Ness type monster rumored to live in the depths of Heaversford Lake.
At first the secluded cabin on an island in the middle of a large lake is the perfect setting for a romantic honeymoon. But then the power goes out, and after that they discover large wads of sticky, smelly plastic trash during their morning hikes. When a local resident drowns under mysterious circumstances, Demetrius and Cody realize that no matter how reluctant they might be, their experience with unusual creatures could help these town people solve the mystery of Esther once and for all. If it doesn't kill them first.