When a murder attempt is made on a seemingly innocuous family, the team travels to their version of hell during the holiday season: suburbia. Chance and Guerrero go undercover at a boring corporate office, Winston joins a neighborhood book club and Ames chaperones a high-school party as they try to figure out which family member is being targeted and why.

Chance is reunited with Harry when he is hired to protect the girlfriend of a rival security agency owner. Meanwhile, Ilsa must go into the field on a mission for the first time, and two team members get closer than ever.