On Ellie's and Awesome's wedding day, everything that can go wrong does, when Roark crashes the party wanting the Intersect.

Sarah and Chuck risk everything to find Chuck's father; Emmett grabs the helm of Buy More.

When Chuck's ex Jill is recruited out of prison to rescue his father from Fulcrum, trust is put to the test; at the Buy More, Emmett devises a ruse to steal Big Mike's job.

When Chuck and Ellie reunite with their father after he left them as children, the lines are blurred between family and Chuck's next assignment.

When Alex -- a coldhearted agent assigned to monitor Sarah -- joins the team, her ruthless methods cut way too close to home for Chuck.