After finding the Flamingo and Black Mask dead at the hands of Deathstroke our heroes still have no idea what happened to Batman. Meanwhile the Joker and Mad Hatter are missing from Arkham, and army of hypnotized teens in red hoods is doing dirty work all over the city, and as if that wasn't bad enough, someone has actually broken IN to Black Gate. When it rains it pours, and in Gotham it is monsoon season.