Max Pendragon is not looking forward to attending Morgana le Fay's Spell School. Not only is his cauldron producing slime instead of spells, but ever since he and his sister Olivia foiled evil Morgana's plot against King Arthur, they know she's been desperate for revenge. With the help of Merlin and a mysterious bard, will Max and Olivia be able to outwit Morgana and save Arthur for a second time?