Harley and Ivy struggle to find their footing in their new respective roles in the Bat Family and the Legion of Doom.

After a falling out with her crew, Harley heads back home to Bensonhurst, where her doting mother waits for her… and her deadbeat dad, who’s more dangerous than anticipated.

Now a member of the Legion of Doom and The Joker’s equal, Harley finds herself spending time with him. Will she slip into her old ways?