Young and talented CIA agent Isabel Alfaro looks forward to her new job in Mexico City, but her new manager Wayne Addison destroys her dreams during her first day of work.

After the bloodbath in Zócalo, panic erupts in Mexico City; Mexican and U.S. armed forces work together to calm things down; in the Fusion Center, attempts are made to locate Bautista.

Pamela, a young woman who lives with a friend, walks dogs professionally in a wealthy area of the city and her customers include Natalia Portillo, who, according to Isabel, is in cahoots with Rafael Bautista.

Wayne, Isabel and Pamela try to learn more about Natalia that could lead them to the Guerrero Cartel and Bautista; during the investigation, Pamela is put in danger and gets cold feet at the wrong moment.

Kidnapping three Mexican Navy marines gives Bautista the upper hand, forcing Wayne, Isa and Romero to launch a frantic mission to rescue hostages.

Isabel and Lalo grow closer while they visit his childhood home in Balle de Bravo, then he reveals one of his greatest secrets, but she draws the wrong conclusions.