Book One: After a massive breakout at Arkham Asylum, Batman and his team are on a mission to bring all the escapees back. First on the list is Clayface! Using social media, Batgirl taps into an informal network to track the villain throughout the city. This inspires Penny-One to create a more organized network of informants and spies called Knightwatch!

Book Two: When Penguin saves people from a mugging, Batman is certain he's up to no good.

Book Three: Mad Hatter has hats from Penguin, Riddler, Clock King, and Scarecrow, but his collection isn't complete without the Bat hat, a.k.a. Batman's cowl.

Book Four: Firefly exacts revenge on the people who ruined his movie career and put him in jail by setting buildings on fire across the city. Batman has to figure out who is on Firefly's list to predict where he will strike next.

Book Five: Mad Hatter has hats from Penguin, Riddler, Clock King, and Scarecrow, but his collection isn't complete without the Bat hat, a.k.a. Batman's cowl.