Outspoken, rebellious, and eccentric fifteen-year-old Harleen Quinzel has five dollars to her name when she's sent to live in Gotham City. Harleen has battled a lot of hard situations as a kid, but her fortune turns when Gotham's finest drag queen, Mama, takes her in. At first it seems like Harleen has finally found a place to grow into her most "true true" with new best friend Ivy at Gotham High. But then Harley's fortune takes another turn when Mama's drag cabaret becomes the next victim in the wave of gentrification taking over the neighborhood. Now Harleen is mad. In turning her anger into action, she is faced with two choices: join Ivy, who's campaigning to make the neighborhood a better place to live, or join The Joker, who plans to take down Gotham one corporation at a time.