Now the head of his own spy agency, Chuck takes on a slick thief and an investor who has stolen money from dangerous criminals. Morgan aids Chuck in planning a surprise for Sarah. Jeff and Lester launch their latest scheme at the Buy More.

As Carmichael Industries takes on a missing persons case, Chuck must acclimatize himself to being Morgan's handler and deal with a rival agency. The Buy More gets a new spokesperson.

Chuck worries Morgan is letting the Intersect change his attitude for the worse. Sarah gives Casey relationship advice on Gertrude Verbanski. Captain Awesome discovers shocking news about Jeff and Lester.

Chuck and Sarah must stop an assassin after the Intersect at a Buy More convention. Jeff shows a new side to himself.

Chuck and Sarah infiltrate an unusual cult to find the designer of a computer virus. The Buy More gets a new employee.

A ruthless agent leads a team of rogue CIA spies intent on framing Chuck for a crime he didn't commit.

Chuck and Sarah discover who is behind a plot to take down their company. A computer virus creates havoc as the Buy More prepares for Christmas. Ellie tries to make Christmas plans for everybody.

When Sarah's old spy handler reappears, she goes off on her own to prevent a secret from her past from destroying her family.