Growing up in East LA, twin brothers Diego and Pedro always knew they had each other, from goofing off on bikes to spying in on parties. As adults, Diego became a police officer looking out for the streets he used to play on, while Pedro turned to a life of crime. When clues start connecting Pedro's death to a case Diego is working on, the mysterious vigilante figure of their youth 'El Chicano" returns, drawing Diego in deeper than he ever expected.