Gabriel and Riley adopt the guise of Secret Service agents when they travel to war-torn Syria in order to rescue a pair of journalists being held hostage there; Riley's past is revealed when she is forced to work with her former boyfriend.
CyberCom investigates a terrorist suicide bombing at a United States Marine Corps base and learns that new, chemically undetectable bomb material is being consumed.
A CIA agent goes rogue with very important information from the CIA, which results in the death of a M.I 6 agent. When Gabriel is brought to the case they find out that Mei Chen is able to hack into his head.