Chuck, Sarah and Casey try to retrieve a vital component for the new Intersect: The Cipher.

At the Buy More, the search for the store's Assistant Manager begins.

Chuck and Sarah go on their first date.

Casey is again instructed to eliminate Chuck as soon as the new Intersect comes online.

Chuck needs to go undercover to seduce a woman named Sasha Banachek, so he an old school spy named Roan Montgomery is assigned as his mentor.

Meanwhile, Captain Awesome himself needs some relationship advice, and he gets it from Morgan.

Lester faces his first problems as assistant manager: He is not taken seriously by his co-workers.

Bryce Larkin returns to town with news about Fulcrum. They have hired a wealthy software magnet named Von Hayes to decrypt information on a stolen chip containing a refresh to the Intersect with highly classified information. Bryce and Sarah have to pose as a married couple at Von Hayes' dining party to steal back the chip, while Chuck has to pose as a waiter.

Meanwhile, Morgan has an encounter with the Mighty Jocks at the Buy More.

Chuck goes undercover at Sarah's 10-year High School reunion, where they meet the girl that tortured Sarah back in the old days.

Chuck goes undercover at a Japanese computer firm to help a video game inventor.

Chuck's ex-girlfriend Jill returns.

The team has to face a hostage situation at the Museum of Natural History.

The team has to work out a security problem at the Buy More.

The team has to face Casey's former sensei.

Sarah teams up with her father, a con artist.

Aballoonman holds the team hostage on Christmas Eve.

Chuck has to protect a rock star. This is a special 3D episode.

Chuck and Sarah go undercover as a married couple in the suburbs. Meanwhile, Big Mike has to face a divorce, so the Buy More team try to distract him.

Chuck and Morgan's friendship is put to a test, when Anna and her new friend find Morgan spying on them.

Chuck gets jealous when Sarah has to seduce a Fulcrum agent. Meanwhile, Jeff and Lester start looking for the "Buy More Babe" as a way of finding a new employee.

Sarah and Casey go looking for a man that seems to be behind Fulcrum's plans to build its own Intersect, forcedly leaving Chuck and Agent Barker in a safety bunker.

Chuck is contacted by the one person that can erase the Intersect from his mind. He starts having trust issues and doesn't know who to lean for help. Meanwhile, Buy More is having a problems with the Buy More from Beverly Hills.

A female agent is sent to evaluate Sarah's performance, when Chuck's feelings for her are revealed. Meanwhile, Morgan, Jeff and Lester are trying to get invited to Captain Awesome's bachelor party.

Chuck's life seems to be coming together, his long-absent father has returned and he landed his dream job. Unfortunately for Chuck, neither turns out to be quite what he expected.

Chuck's father is kidnapped and Chuck finds himself in the need to ask his ex-girlfriend Jill for help. Meanwhile, the Buy More team try to bring down Emmett's corporate evaluation.

While Chuck and Sarah go on to rescue Steve they realize they have a chemistry together. Meanwhile Morgan becomes a pariah at the Buy More after mistakenly getting Emmett promoted.

Ellie's big day finally arrives and Chuck must save her life and her wedding from being ruined by Ted Roark and Fulcrum.