The city of Los Angeles has been occupied by an unknown force. Former FBI agent Will Bowman and his wife Katie are separated from their son during the invasion, and are willing to do anything to be reunited with him. When they are offered a chance to get their son back by collaborating with the occupational government, Will and Katie find themselves faced with the toughest decision of their lives.

Katie's first mission forces her to question her commitment to the cause. Will's search for Geronimo doesn't sit well with the resistance. Bram's girlfriend shares a secret with him.

Geronimo's identity is revealed. Will begins to question Katie's loyalties. Bram finds his way into a secret world. Snyder sees an opportunity to improve his standing.

A resistance operation traps Will, Katie and Snyder in the Yonk and tests their allegiances.

Will hunts the resistance, bringing him closer to learning his wife's secret. Katie feels cut off from her family and her cell. Maddie is caught up in Green Zone intrigue.

A high-ranking Resistance member is ready to cut a deal. Katie receives a second chance. Bram proposes a risky journey outside the colony walls.