While Headmaster Mordred is trying to impress a new student, who he believes to be the first female at Dragon Slayers' Academy, the ghost of one of the school's founders besieges the halls seeking his stolen gold.
When a ghost starts haunting Merlin's Institute for the Knowledge of Everything and demands its magic back, hard-shelled detective Humpty Dumpty, Jr. is called in to solve the case.
When twelve-year-old Alex's Scottish castle of Carra is sold, dismantled, and moved to Texas, the ghosts that raised him from a child have difficulty relocating.