Catwoman, Poison Ivy and Harley Quinn are tired of playing by other people’s rules. As Catwoman deals with the aftermath of battling her sister, Poison Ivy’s career at Gotham City’s S.T.A.R. Labs takes an unexpected turn. Secrets involving the “Return of Bruce Wayne” storyline affect all three Sirens, setting them against each other in a brutal display of their villainous roots. This volume includes guest appearances by Zatanna and Talia al Ghul.