Birds of Prey is directed by Cathy Yan from a screenplay by Christina Hodson. The ensemble cast includes Margot Robbie, Mary Elizabeth Winstead, Jurnee Smollett-Bell, Rosie Perez, Chris Messina, Ella Jay Basco, Ali Wong, and Ewan McGregor. Birds of Prey follows Harley Quinn as she joins forces with Black Canary, the Huntress, and Renee Montoya to save Cassandra Cain from Gotham City crime lord Black Mask.
Since the events of Suicide Squad, Harley Quinn has left the Joker. Batman has disappeared, leaving Gotham City unprotected from crime. When a young girl named Cassandra Cain comes across a diamond belonging to crime lord who goes by the name of Black Mask, Harley joins forces with Black Canary, Huntress and Renee Montoya to protect her.