Sarah is forced to confront a secret from her past and feels she must do so alone, while Chuck urges her to let him help. When Sarah encounters her original handler, Kieran Ryker, she fears that he will harm those closest to her, including her mom.

As Chuck and Sarah try to realize a new, safer future, Morgan's past as the Intersect sends them to Vail on one last mission, where they enlist the help of an unlikely source -- the legendary Bo Derek. Elsewhere, Jeff and Lester continue their own spy mission.