Barcelona, 1980s: in a tough urban neighbourhood inhabited by survivors and ruled by ex-legionnaires Gandhi, Fontán and Andrade - who are fighting a war for control of the streets - Nen and his friends Palito, Topo and Tostao dream of making it big in the world of rumba. But Nen discovers why his father, El Guacho - of whom all Nen has left is the memory of his brilliance as a rumba singer - disappeared many years earlier. He learns how the relationship between his mother, Chata, and Ghandi, leader of the neighbourhood, was connected to his father's disappearance, and so Nen is forced to balance his own desire for vengeance with his longing to triumph.

Años 80. En un barrio de supervivientes dirigido por los ex-legionarios Gandhi, Fontán y Andrade, se está en pie de guerra por el control de las calles. El Nen y sus amigos, Palito, Topo y Tostao, sueñan con triunfar en el mundo de la rumba. Pero cuando Nen descubre los motivos de la desaparición de su padre, el Guacho, del que sólo queda su pasado de esplendor como cantante de rumbas, tiene que enfrentar su deseo de venganza con sus ansias de conseguir el triunfo.