Diana Guzman is a short-tempered 18 year-old high school student close to expulsion from school for fighting, her mother is dead, her dad is surly, and she knows men can cause pain. When she picks...

Diana Guzman is a short-tempered 18 year-old high school student close to expulsion from school for fighting, her mother is dead, her dad is surly, and she knows men can cause pain. When she picks up her younger brother at a Brooklyn gym where he boxes to please his father, she decides she wants to train. Hector, a coach, reluctantly agrees to teach her, but it's soon clear to him that Diana has talent. She meets another young boxer, Adrian, and they develop feelings for one another that they both find hard to articulate. Making their relationship even more complicated is when they are scheduled to have a boxing fight against one another.