Roddy forgets his friends and the quest when he is turned into a singing rock star by a cursed mandolin. The only way to break the curse is to find someone who wants the mandolin. Luckily, the Duke is on the way!
Upset that he lost the 'Villain of the Year' award to Bob, Bob the Magician, the Duke works with the Questers to steal the Great Book of Magic from Bob, Bob in the hopes of ousting him from the competition.
When Xiao falls head over heels in love with a girl, he decides to leave the quest. However, the girl turns out to be the evil Spyder in disguise. Once again, he wants revenge. Who knew love could hurt so much!
When the Great Book of Magic is to be burned by villagers blaming it for their ills, Roddy pretends to be a doctor while William and Elspeth try to find the real cause behind the illnesses.
Questers are elated to discover that the Great Book of Magic is at a Talking Animal Convention. However, it's 'no humans allowed' so they rely on a talking Cat who might have a second agenda.
The Questers find themselves in a murky swamp lured by a singing frog which turns Gwen into a toad. Now the Questers have to find Gwen and have her kiss Roddy to save her. "Ribbit."
The Duke accidentally turns Rex into a giant who turns on his creator. The Duke must turn to the Questers for help. But can they even save the world from the giant cockroach Rex?
The Questers stop at the local superstore and discover Spyder, their old nemesis. Since they ruined his reputation as a villain, he's out for revenge and it's a race down the aisles to escape the wrath of a rabbit scorned.
When the Questers discover that the Great Book of Magic has a sweet tooth they set out to lure it with a big cake. But the Duke challenges them to a bake off. Who will be the best chef?
When Gwen receives a wedding invitation from Percy Pond, she insists on going. But Roddy, jealous, refuses to set foot in the church. It's a good thing too, since the whole wedding was a trap set by the Duke.
Gwen enters a beauty contest when she learns first prize is a magic mirror that will tell them where to find the Great Book of Magic. It's all a trap set up by royal brat Miranda working for the Duke.
When Roddy installs solar panels on the Gwenmobile to be more eco-friendly, he accidentally sends a ray beam into outer space and diverts a meteor. Now, it's headed toward earth and everyone has to join forces to stop it.
The Questers are dismayed when they must build a bridge in a small town to pay off a speeding ticket. But since the Knight Code won't allow Roddy to do physical labor, he becomes their boss making matters more difficult.
A crafty dog sent by the Duke hypnotizes Roddy into giving him the Great Book of Magic. When the ruse is uncovered, the Questers use Roddy - who thinks he's a dog - into sniffing out the thief.
When Grandfather's messages are full of spam the Questers find a computer geek to fix the problem only to discover he works for the Duke!
The Duke goes into the future to find Roddy's great, great, great, great, great grandson, the bold and nave Captain Roddy. He gives him a mission to stop the Questers (in the past). Which Roddy will win? Past or future?
Gwen and Roddy must save their friends by fighting an evil witch. But when Roddy eats some magical fruit, he's turned into a baby! Gwen's got her hands full as a single mom!
When Griselda accidentally swallows the Great Book of Magic, The Duke miniaturizes himself to fetch it in her stomach. But Roddy and William are right behind him. Indigestion, here we come!
The Questers discover they have a fearsome enemy on their hands: The Duke's mother! After she catches Gwen, Roddy and William, it's up to Xiao Long and Elspeth to convince the Duke to stand up to his mother once and for all.
When Elspeth loses her memory, the Duke sets her against her friends. Will friendship win over memory loss?
Landing on a remote island, the Questers are turned into sheep to help keep the golf course nice and neat! It's up to William and Elspeth to save their friends! But with the Duke on the island, that won't be easy.