Instead of an uncover cop infiltrating a gang, Ryan Lopez does the opposite. He's a cop for the Gang Task Force, while having a loyalty to the Acosta gang.
On Gang Related Season 1 Episode 1, Ryan's partner is killed by Carlos Acosta and it throws his allegiances into question. At the same time, the task force takes more extreme measures to bring down LA gangs.
Ryan's in a precarious position as he's pulled between his love for his job and his love for his adopted family.