The Bone cousins have joined with Gran'ma Ben and Lucius to thwart the rat creature invasion, but the showdown at Old Man's Cave is beginning to resemble Mr. Custer's last stand.
After the Bone cousins are exiled from Boneville, they become separated in the desert. They all end up in the same valley, but in their quest to find one another and go home, they must also fight rat creatures, save dragons and reinstate a princess.
Orphan Billy Batson gains superpowers sparked by a magic word after he stumbles into a world of wizards, monsters, and political machinations, and soon he is battling fiendish villains while searching for his long-lost sister, Mary.