Based on the “Harleen” graphic novel, showing Harley's history with Joker and Ivy. And her time at Arkham as a doctor interacting with various inmates. Harvey Dent is her mentor, friend, and a suitor. The good and the very bad of it all. Hugo Strange is her boss, mentor, and abuser. Joker appears to be a savior at first, rescuing her from Strange and her buttoned up life. But he turns out to be an even worse nightmare. Ivy is constantly recurring as a safe and peaceful presence, and a comedic relief. The film spends most of its time with her innocence and optimism, her descent into madness, then her crimes and abusive period with Joker, and ends with her hopefulness of a future with Ivy.
