"Harley Quinn returns to Gotham City after The Joker War and has decided to turn over a new leaf and make up for the sins of her past by becoming its newest protector. Harley Quinn here to let everyone know that I'm starring in a brand-new graphic novel collection here with a brand-new status quo. I'm coming back to Gotham City to make up for the sins of my past, and help the city recover from "The Joker War!" But there's no welcoming committee waiting...