Max is bored with fairy tales until the gang goes into storybook world. Things are fine until FX's mischievous cousin comes along and makes everyone dance to music--which distracts them from their duties.
Zoe gets plagued with Nasal Bathrobe, the virus from Osirus, on the day of her birthday party. Max and company have to capture the virus or else never go into outer space again.
Zoe grows a giant carrot for a vegetable competition, but the carrot, named Rooty, appears to be alive. He enlists Max's help to save him from a rabbit named Fatso, who wants to eat him.
Max's father buys Max a toy dragon, which Max names Stitches, and FX brings him to life. The gang take Stitches through time via the rocket, but Stitches is a baby at heart, which gets him into trouble.
While visiting Buckyland theme park, Max and company encounter a friendly family of rats who are desperate for food, and they in turn do what they can to help.
After an accident, A.B.'s foot squeaks, so the gang travels to Ireland -- otherwise known as ""Leprechaun Land"" -- to find a good cobbler. The cobbler they find is a leprechaun named Blarney Fife, who is trying to keep the map to Leprechaun Land's pot of gold from a greedy sneak named Pete O'Moss.