After the concluding events of Lowball, Officer Francis Black of Fort Freak, vigilante joker Marcus 'The Infamous Black Tongue' Morgan, and ace thief Mollie 'Tesseract' Steunenberg get stuck in Talas, Kazakhstan. There, the coldblooded Baba Yaga forces jokers into an illegal fighting ring, but her hidden agenda is much darker: her fighters' deaths serve to placate a vicious monster from another dimension. When the last line of defense against this world weakens, all hell breaks loose, literally.