Ellie can't believe how amazing their dad is, since he actually made this happen. Then she notices her stabbed computer and asks what happened. She wanted to use it to find Agent X. Chuck says he is Agent X, duh. If only it were that simple... She tells him that can't be the case unless he gave him the Intersect before he was born. It was November 21, 1980 (how old is Chuck supposed to be, anyway?), when he input the Intersect into an operative. Sarah marvels at there being a previous Intersect. Ellie explains that Agent X became his cover identity and their dad must have felt responsible so he spent his whole life looking for him. Ellie's disappointed that they won't be able to find him now, with the broken computer. Chuck says he didn't spend ten years in the Nerd Herd for nothing, and sends Morgan to get his computer-fixing tools.
Buy More. Big Mike's disappointed he's here, and his cover story became the truth. He doesn't want to waste his free party pass. Lester asks if they're going to the real Vegas, but Big Mike says they'll go to Reno instead.
Castle. Chuck works like a surgeon on the computer while Morgan hands him his tools like a good scrub nurse. Chuck fixes it all up, and Ellie pulls up all of the files she's freed. The Agent X file has all been redacted except for the name Hartley. Ellie says he left this one other thing, too. She shows them the picture of the old house, and Chuck flashes on the house's location. Ellie's amazed at the Intersect at work. Chuck notices the date on the computer is a week before Agent X went missing. They wonder if it's his home, or a safe house of some sort. Chuck tells Ellie they're on their way to find him, because the people who put the hole in Dad's laptop are looking for him too. She wants to go with them, but Chuck reminds her she's got a baby at home. She worries about him, but Chuck says, "Don't worry. It's what I do."
Chuck, Sarah, and Casey find the house in England. When they knock, it's a little old lady who invites them in to use the phone (they pretend they're broken down) and offers to make some tea. The three sit in a very British floral living room wondering is she could be Agent X or poisoning their tea. She comes back and they're all afraid to drink. But they do it anyway. The British lady asks where they're all from, and Chuck and Sarah say they're married, and they picked up a hitchhiker (that would be Casey). Sarah says that her father knew a man named Hartley who lived here. The lady says she isn't related to him, but knows him. He was a previous tenant, and a bit of a recluse. She says she doesn't know what happened to him. Chuck suggest they leave, but she says she has a box of Hartley's personal effects, if Chuck could give her a hand getting it, since it's a bit heavy.