At home, Chuck shaves, showers, and gets dressed in his old Nerd Herd outfit, pocket protector and all. He arrives at El Bucho and gets in by telling the guys at the door that someone called about a computer emergency: "Sound board's down." That really is a good cover. Everyone trusts a geeky computer guy. Chuck gestures at Casey as he comes in, and Casey radios to Sarah that they have a situation. She sees Chuck, and comes over to him, asks what he's doing there. Chuck says not to worry. He's just here as backup, to prove to Agent Redhead. But the guy from next to the pool walks in, and Sarah asks Chuck to kiss her. He wonders if they shouldn't talk first, but he insists. So he does it. Then she pushes him away and slaps him so hard he falls to the ground. The pool guy walks up and asks who the hell that is. Sarah says it's just her ex, who's having some trouble letting go. So mean, but maybe he deserved it.
In a food pantry, Casey asks Sarah why she knocked him out, and she says, "It was a slap." Chuck protests that he was caught off-guard on an empty stomach. He says he can take a punch, and Casey says, "You mean a slap." Chuck says he's sorry, and didn't mean to screw anything up. He's just here to help, and thinks he can be a spy even though things went wrong in Prague. He looks at Sarah and pleads with her, but she tells Casey to get him out of here and leaves. Chuck asks Casey for a chance, but Casey says it's a simple courier exchange. He says the guy with Sarah is the mark, and he's meeting with a major Ring operative tonight. Chuck reminds us that the Ring killed Bryce. Casey says the moment the Ring guy meets with Sarah's fake boyfriend, they'll strike. He tells Chuck to get out of here before he spooks Javier Cruz, the courier. Chuck flashes on the name Javier Cruz, and sees that he's an international assassin. Casey leaves, though, and tells his guys to get rid of Chuck. Chuck's screams that Javier's not a courier are met on deaf ears as he's led out. Casey, in the other room, tells Sarah he dumped the lemon. Chuck's locked out in an alley, and trying to get in. He loses his pocket protector nametag in the alley as he tries to flash on the door. A guitar player walks up right as Chuck flashes on the door, so Chuck accidentally kung-fu kicks him unconscious. He apologizes, but then has an epiphany.