When Rick and Morty buy the greatest hat in all the multiverse, it attracts an evil so banal that even our intrepid adventurers may not be able to stop it. In true comics-event tradition, this one features everyone from Rick and Morty to Mr. Poopybutthole, Pickle Rick, and MORE. A faux-crossover event from the evil geniuses behind Rick and Morty Presents: Birdperson!