Based on a true story, Federal agent ROBERT "BOB" MAZUR (Bryan Cranston) goes deep undercover to infiltrate Pablo Escobar's drug trafficking scene plaguing the nation in 1986 by posing as slick, money-laundering businessman Bob Musella. Teamed with impulsive and streetwise fellow agent EMIR ABREU (John Leguizamo) and rookie agent posing as his fiance KATHY ERTZ (Diane Kruger), Mazur befriends Escobar's top lieutenant ROBERTO ALCAINO (Benjamin Bratt)...