Diana Guzman (MICHELLE RODRIGUEZ) is a quick-tempered, high school senior who's facing suspension if she gets into one more fight at school. With her only friend being another classmate, Marisol (ELISA BOCANEGRA), and living in some Brooklyn projects with her dismissive father, Sandro (PAUL CALDERON) -- who doesn't think she's feminine enough -- and her younger brother, Tiny (RAY SANTIAGO), Diane doesn't see much of a bright future for herself.
That changes while running an errand for her father to a local boxing gym where it turns out Tiny's taking lessons from Hector (JAIME TIRELLI), a seasoned coach. When she decks Ray (VICTOR SIERRA), another boxer who was picking on Tiny, she suddenly realizes she's found her niche.
Stealing money from her father's dresser drawer and swearing Tiny to secrecy, Diane begins taking lessons with Hector, although her lack of skill and control initially frustrates her. Nonetheless, after weeks of training, she becomes quite good, wanting to have her first fight, and proves to be a formidable competitor.
When her friendship with fellow boxer and potential opponent, Adrian (SANTIAGO DOUGLAS), turns into something more substantial, however, Diana finds herself torn between her love of boxing and her newfound more feminine side, and must figure out what to do next.