Chuck embarks on his final mission in the series finale. He must revisit his past in order to save his future, as he teams up with family, friends and unlikely allies to vanquish sinister villain Nicholas Quinn, who is intent on destroying all that Chuck has built in the past five years.

Chuck: chuck murders Sarah and realizes he never loved her anyway. He then decides killing is fun and kills Casey and Morgan in horrific ways.

When a mission in Japan becomes a hostage situation, Sarah and Chuck must face the merciless Nicholas Quinn (guest star Angus Macfadyen) aboard a speeding Japanese bullet train. Meanwhile, the mission leaves Casey with an impossible decision.

While Chuck and Sarah contemplate the next step for Carmichael Industries, Casey’s forbidden love, Gertrude Verbanski (guest star Carrie-Anne Moss), walks back into his life with a questionable mission in South Beach. Meanwhile, Jeff’s enhanced intelligence leads he and Lester to suspect that something unusual may be happening at the Buy More.

Sarah is forced to confront a secret from her past and feels she must do so alone, while Chuck urges her to let him help. When Sarah encounters her original handler, Kieran Ryker (guest star Tim Dekay), she fears that he will harm those closest to her, including her mom (guest star Cheryl Ladd).

Chuck and Sarah discover who’s behind the plot to destroy Carmichael Industries. Meanwhile, Ellie’s plans for a perfect Christmas begin to come apart. At the Buy More, Morgan and the gang must fend off angry customers as a computer virus threatens to ruin Christmas.

Chuck and Sarah race against time to take down a dangerous computer virus, pitting them against Robyn Cunnings (guest star Rebecca Romijn), a ruthless spy who will stop at nothing to get what she needs. Meanwhile, Ellie and Awesome’s date night takes a dangerous turn and Morgan is sent on a special mission to recover [...]

A mission to track down a computer super virus leads Chuck to return to his roots as a hacker — and to call on his biggest competition, Gertrude Verbanksi (guest star Carrie-Anne Moss), for help. Elsewhere, a new Buy More employee (guest star Danny Pudi) complicates Jeff and Lester’s friendship.

Chuck (Zachary Levi) and Sarah (Yvonne Strahovski) go undercover at a Buy More convention to hunt down an assassin whose mission is to take down the new Intersect. Meanwhile, Morgan (Joshua Gomez) must deal with the consequences of having the Intersect. At the Buy More, Jeff (Scott Krinsky) begins to show a very different side [...]