Chuck

When Chuck Bartowski (series star ZACHARY LEVI) opens an e-mail subliminally encoded with government secrets, he unwittingly downloads an entire server of sensitive data into his brain. Now, the fate of the world lies in the unlikely hands of a guy who works at a Buy More Electronics store with his best buddy, Morgan Grimes (series star JOSHUA GOMEZ), and who lives with his ever-supportive sister, Ellie (series star SARAH LANCASTER).

As Chuck continues to come to grips with his new life as a spy, tension builds between his recently appointed partners, Sarah and Casey. When a doctor who seems to have a solution to Chuck's problem is killed, Casey and Sarah blame each other. Both agents persistently try to convince Chuck that the other one is responsible. Now it's up to Chuck to decide whom to trust.

Chuck is finding out that living two separate lives is not going to be easy. After his boss at Buy More challenges him, Chuck enlists the help of Morgan and the Nerd Herd to prove himself worthy of becoming assistant manager. Meanwhile, Sarah and Casey force Chuck to go undercover for his first real spy mission.

Chuck takes on an unusual task when Sarah's hot colleague from the CIA requests help with a mission. He finds out that a million-dollar diamond hidden in a Malibu mansion is being used to help fund terrorists and must help these two beautiful women steal it back. Meanwhile, Chuck begins to realize that Sarah's double life, which she is very good at maintaining, really makes it hard for him to get to know who she really is. And Morgan tries to get Chuck to set him up with Sarah's friend.

Chuck faces his first moral dilemma as a spy. When agents Sarah and Casey refuse to aid an unauthorized mission by a top Chinese spy taking place in Chinatown, Chuck faces the tough decision to either go against the U.S. government and his friends or do what he believes is right. Meanwhile, Morgan is caught in a dilemma of his own when Buy More forces him into a sales competition that could cost him his job.

When Chuck meets a fellow government agent with a double life, a gadget whiz whose brain makes him a national security asset and a dangerous liability -- much like Chuck -- he must decide whether to turn the agent in to Sarah and Casey or help him escape. Meanwhile, Halloween, a holiday that means a lot to buddies Chuck and Morgan, is a little different this year, as Morgan feels that Chuck is neglecting their childhood memories and friendship.

When Chuck finds out that his former professor is a government operative who is being hunted because of a sensitive top-secret file, he returns to Stanford University, the institution from which he was expelled. While using his past experiences to determine what the professor knows, Chuck discovers some shocking secrets about his own life. More importantly, Chuck learns the truth about his former friend Bryce Larkin (recurring guest star MATTHEW BOMER), who was responsible for Chuck's expulsion. Meanwhile, Morgan has problems with the new assistant manager at Buy More.

Chuck battles with his real love life and "cover" love life when he meets a very pretty girl named Lou (recurring guest star RACHEL BILSON), who seems interested in the real Chuck. On the other hand, Chuck's relationship with Sarah heats up as they go on a double date with Ellie and Captain Awesome (recurring guest star RYAN McPARTLIN) and try to explain their sex life. Meanwhile, a poison specialist trying to obtain codes to nuclear facilities uses a "truth" potion to help him get answers. After all are exposed to the serum, Chuck discovers a lot about his partners.

When Chuck starts dating Lou (recurring guest star RACHEL BILSON), a sandwich maker, and things seem to be going really well, the situation incites some jealousy from Chuck's "ex-girlfriend" Sarah, who discovers that her feelings may not have been just part a cover story. Things get even more complicated when it is discovered that Lou is in a smuggling ring. Is her relationship with Chuck another fraud, or is it real? Meanwhile, Morgan becomes acquainted with an unlikely girl.

At Thanksgiving, Bryce (recurring guest star MATTHEW BOMER) returns, after being assumed dead. Secret internal committees trying to destroy the "intersect" -- otherwise known as Chuck's brain -- saved Bryce, hoping that he would help them locate it. But in order to prove to Sarah, Casey and the rest of the CIA that he is not rogue, Bryce needs Chuck's help. Upon seeing former lovers and partners Bryce and Sarah back together, Chuck grows jealous and doubts any future with Sarah. Meanwhile, as Buy More prepares for the biggest shopping day of the year, Morgan is left in charge to ensure that everything goes well.

Still licking his wounds after realizing Sarah still has feelings for Bryce (recurring guest star MATTHEW BOMER - "Traveler"), Chuck must assume the cover of being Sarah's husband on a mission to foil a politically connected counterfeiter and yachtsman. Emotions and sea legs are tested when Chuck, Sarah and Casey head to the marina to scuttle a plot that also puts an unwitting Morgan and Anna (recurring guest star JULIA LING - "ER," "Studio 60 on the Sunset Strip") squarely in the crosshairs. Meanwhile, it's time for the annual Buy More holiday party -- but the party comes with lots of rules from Big Mike (recurring guest star MARK CHRISTOPHER LAWRENCE - "The Pursuit of Happyness").

Chuck discovers that several Russian arms dealers are secretly meeting in Los Angeles. One particular Russian woman catches his attention, and he flashes on her as being Casey's ex-girlfriend. Chuck grows intrigued and begins to pester Casey about his history with the woman. After learning she is to set marry one of the Russian arms dealers, Chuck insists that Casey fight for his woman. Will Casey go after his true love without compromising his identity? Meanwhile, Captain Awesome (recurring guest star RYAN McPARTLIN) and Ellie reach a tough point in their relationship.

Captain Awesome (recurring guest star RYAN McPARTLIN) asks Chuck if he can have Ellie's hand in marriage, and then insists that Chuck hold on to the ring until the proposal is planned. Chuck locks the ring in his Buy More locker, but returns the next day to discover everything has been stolen from the store. Meanwhile, Casey and Sarah discover that the CIA has been spying on them in hopes of discovering "the intersect." With Chuck's identity and life on the line, the National Security Agency has no other option than to relocate Chuck into a permanent holding cell. Will Chuck lose his family and friends forever?