Chuck must show Captain Awesome how to be a spy when he is targeted by an evil agent. Morgan's promotion to Assistant Manager changes his relationship with Jeff and Lester.
Shaw sends Chuck on a solo mission to Paris, over Sarah and Casey's protests, where Chuck meets a beautiful woman and flashes on an assassin en route. Morgan gains an unexpected ally in dealing with Jeff and Lester at the Buy More.
Chuck trains a new Nerd Herder and deals with an asset with ties to The Ring. Devon gets nervous about covering for Chuck when Ellie gets suspicious of his work.
Chuck's plans to cook dinner for Hannah, Ellie, and Devon are interrupted when he has to pose as an assassin. Sarah vows to keep her relationship with Shaw professional.
When a job Casey performs for his former commander lands him in jail for treason, Chuck and Sarah must come to the rescue. Devon has to scramble to keep Chuck's secret from Ellie when she wins a fellowship grant.
Casey's patience is tried when he has to train Morgan to be an agent, while Chuck and Sarah learn from a successful but splintered married team of spies.
Casey goes undercover to protect his daughter from The Ring, Big Mike receives some shocking news regarding the Buy More, and Chuck's father becomes the team's only chance of survival against The Ring.
Casey goes undercover to protect his daughter from The Ring, Big Mike receives some shocking news regarding the Buy More, and Chuck's father becomes the team's only chance of survival against The Ring.