A Department of Homeland Security agent is assassinated, prompting FBI Special Agent Nathan Blythe to form a special task force consisting of LAPD detective Mark Meachum (
Jensen Ackles), DEA agent Amber Oliveras (
Jessica Camacho), DHS intelligence and analysis officer Damon Drew (
Jonathan Togo), FBI cyber crime specialist Evan Shepherd (
Violett Beane), FBI terrorism specialist Keyonte Bell (
Elliot Knight), and LAPD gangs and narcotics specialist Luke Finau (
Uli Latukefu). Meachum is fresh out of a long undercover assignment with the Aryan Brotherhood struggles with anger issues, while Oliveras has a documented history of drug abuse. The task force finds a suspicious deposit in the dead DHS agent's bank account, which leads them to the Los Reyes Nuevos cartel in Tijuana, and discovers a large deposit of fissile material left at the Port of Los Angeles.