Julian (Álex González) and his buddy Luis (Miguel Angel Silvestre) are local youths involved in a gang of aggressive neo-Nazis, under the leadership of Solis (Javier Bardem). Julian’s life begins to change when he starts training at a gym, where the discipline of boxing, the integrity of his coach (Carlos Bardem), and the affection of a young Latina woman (Judith Diakhate) gradually influence him. These new influences pull him away from the gang, but Luis is unwilling to let him abandon the “pack.”