Argumento
Collects Harley Quinn #28-42. Cover by Amanda Conner.
Harley's entire crew comes together to celebrate the birthday of cyborg senior citizen Sy Borgman...but is there actually a bigger secret behind this gathering? Plus, Harley becomes...the new Batwoman? And then, Harley crosses paths with some of Batman's greatest foes, including the Penguin, Killer Croc and Mr. Freeze!