On the enchanted planet of Otherland, thirteen-year-old Bunker Charles is forced by a one-inch tall Flooglebopper to return with him to the center of Otherland in his cobamole. There he is required to defend the diminutive mining community's precious mangolite from the one-foot tall Bargolians, who plan to steal the mangolite to light their underground city. Bunker’s friend Gittel is captured by the High Priest of Bargolia while attempting to rescue him and forced to to fight against him in their defence. Can Bunker use diplomacy to reconcile the two sides and rescue Gittel?