When Joe Talbot's backpack is confiscated, Wishbone and Joe must confront a scary neighbor who owns a big mean dog to get it back. This reminds Wishbone of an old English tale Beowolf. Imagining himself as the great hero Beowolf, Wishbone must defeat a series of monsters who are ravaging the kingdom. A lifetime of adventure of adventure takes him on a collision course with his greatest foe yet. And this time, more than courage will be needed tp defeat such a monster-it will take a hero with four legs and the heart of a warrior!