When Milton and Marlo Fauster die in a marshmallow-bear explosion, they get sent straight to Heck, an otherworldly reform school. Milton can understand why his kleptomaniac sister is here, but Milton is -- or was -- a model citizen. Has a mistake been made?
Not according to Bea “Elsa” Bubb, the Principal of Darkness. She doesn't make mistakes. She personally sees to it that Heck -- whether it be home ec class with Lizzie Borden, ethics with Richard Nixon, or gym with Blackbeard the pirate -- is especially, well, heckish for the Fausters. Will Milton and Marlo find a way to escape? Or are they stuck here for all eternity, or until they turn eighteen, whichever comes first?