Lisa becomes disheartened when she learns the shocking truth behind the “tween lit” industry and her beloved fantasy novel characters, but Homer decides to cash in on the craze and forms a team to group-write the next “tween lit” hit, with the king of fantasy, Neil Gaiman, lending his expertise to the effort.

Maggie becomes possessed by an ancient demon, Lisa discovers a creepy/perfect version of her family in an alternate universe and Homer cannibalizes himself.