A.B. is frustrated because Max never listens to him, so he suggests that Max create a new plastic parent -- and he does.

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.

It's Halloween, and Max is tired of staying home and missing out on the fun. So FX's trouble-making cousin XS takes the trio to Terrorforma, the spookiest place in the universe.