This issue features the second and final chapter of " Sister Zero", in which Catwoman confronts the monster that her sister Maggie has become. Will the sisters reunite by the end of this confrontation — or will Selina forever be a "demon" in her sister's eyes?  What is inevitable is there will be a battle. 
 
In the battle the anti-villain Sister Zero gets her name and possess Harley Quinn.  It is only up to Catwamon's love for her sister that may save her.  Also in this issue is a flashback of Maggie's origin and the path that has lead her to this point.
 
Also in this issue is a preview of Action Comics 890.  This is primarily a five page preview of a Lex Luthor story.  There were several DC Comics that were printed this month that had the same preview.