Chuck and team are determined to get the Intersect out of Morgan in order to stop the CIA from killing him. Decker tells them that the assassin's name is "The Viper" and he is coming for Morgan. Chuck decides to throw them off by going to the Buy More sales convention, disguised as Morgan.
They meet a lot of people they may suspect is "The Viper". A woman named Jand and the Viper plants a bomb in Sarah's car and they set off to stalk Morgan. Chuck and Sarah are a step ahead - they diffuse the bomb and take The Viper into custody.
Later, Casey guns down The Viper and a few of her people. Lester pumps carbon monoxide into the break room, almost killing Big Mike. Jeff gets him arrested for this. CHuck and gang celebrate since Awesome announces he's going back to work, leaving Ellie to stay home with the baby.