Harley Quinn joins forces with a singer, an assassin and a police detective to help a young girl who had a hit placed on her after she stole a rare diamond from a crime lord.
Margot Robbie
Harley Quinn
Rosie Perez
Renee Montoya
Mary Elizabeth Winstead
Helena Bertinelli / Huntress
Jurnee Smollett
Dinah Lance / Black Canary
Ewan McGregor
Roman Sionis
Ella Jay Basco
Cassandra Cain
Chris Messina
Victor Zsasz
Ali Wong
Ellen Yee
