When George and Harold hypnotize their principal into thinking that he is the superhero Captain Underpants, he leads them to the lair of the nefarious Dr. Diaper, where they must defeat his evil robot henchmen.

Jack Frost plans to expose Fairyland by stealing their musical instruments to play in a televised talent contest, but Rachel and Kirsty step in to help Ellie the Guitar Fairy recover her magical guitar.

Kirsty and Rachel find Glitter, Penny's magic pony, but they have to find a way out of the forest before Jack Frost and his goblins catch up to them and capture Glitter for themselves.

"It's Halloween, and Rachel and Kirsty can't wait to go trick-or-treating together. But for Jack Frost, this holiday is all about the tricks! Three magical pieces of Halloween candy are missing, and Jack Frost's goblins are to blame. If Trixie the Halloween fairy doesn't find the candy first, the holiday could be ruined!"--P. [4] of cover.

"Melodie the Music Fairy's magic is missing, the party music is hitting all the wrong notes. Rachel and Kirsty have to change the goblins' tune!"--Back cover.