Captain Underpants's spookiest - and stretchiest - adventure yet! George Beard and Harold Hutchins are back in a new Halloween adventure! Piqua's biggest pranksters are getting ready for the best holiday ever - Halloween, of course. But their dreams of costumes, candy and haunted houses go down the drain when Mr Krupp and Melvin start a campaign to make Halloween illegal! That's when George and Harold come up with HACK-A-WEEN, a totally legal spin-off of Halloween. But will disguises, hack-o'-lanterns and sneak-or-snacking fill the pumpkin-shaped holes in their lives? Find out in this comic reader based on the "Hack-A-Ween" episode of the hit Netflix show.