It's Thanksgiving and Chuck's nemesis, Bryce Larkin, returns to his life after being ruled dead earlier in Chuck's life. Secret internal committees trying to destroy the intersect, now better known as Chuck's brain, saved Bryce in hopes he would be able to help them locate it. Bryce needs Chuck to help prove to Sarah, Casey and the rest of the CIA that he is not rogue. Upon seeing Bryce and Sarah back together, former lovers and partners, Chuck grows jealous and doubts any future with Sarah. Meanwhile, Buy More is prepping for the biggest shopping day of the year and Morgan is left in charge to ensure all runs well.

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