Julian is a young, angry Neo-Nazi. Despite being poisoned by hate, there is nobility in his soul. He will discover it in a boxing gym thanks to Carlomonte (Carlos Bardem), an alcoholic and a former boxer who once had it all but lost it. In the gym, Julian will learn to fight with rules. He will slowly empty himself of hate, and learn to love when he meets Alyssa, a young immigrant. Julian will have to take an important decision when his former colleagues (among whom Miguel Angel Silvestre and Javier Bardem as Solis, the group's ideologue) put him to the test.