Bad day gets worse when Sarah throws Chuck a surprising relationship curveball as the CIA orders Vivian Volkoff assassinated. In order to prove Vivian's innocence, Chuck must put his trust in a dangerous ally her father Alexei Volkoff. Meanwhile, Ellie suspects that her mother is interfering with the search into her father's past.

Chuck and Sarah put aside spy work to have a weekend of debauchery, but Awesome's plans for Chuck's big night don't go quite as expected. Meanwhile, Ellie's investigation into her father's computer leads to a life changing discovery.