Angie Harmon has Captain Awesome on a rooftop when the episode begins. She's a Ring operative named Sydney who knows everything about him, but the problem is, she thinks he's the spy in the family and forces him to work with her. When he reports this back to Chuck, he wants to put an end to it, but General Redhead, Sarah, and Casey convince him that he has to be Awesome's handler and help him work with her to infiltrate and take down her Ring cell, thus securing Devon's identity and taking out some of the problem in the process. The first mission they go on works out pretty well, because Chuck's there to assist and flash on stuff. The key, though, is that Brandon Routh, who introduces himself as Shaw (or, as we'll know him, Agent Superman), shoots himself and fakes his death, making it look to Sydney like Devon did it (as she requested).
General Redhead introduces them all to Shaw and says he's basically their new boss where the Ring is concerned. But when he wants to keep using Awesome to try to get Sydney, Chuck takes matters into his own hands and calls Sydney's phone to tell her he's the real spy. She and her gang meet him at the Buy More, and she basically doesn't believe Chuck that he's the guy who could have killed Shaw. Speaking of Shaw, he won't let Casey and Sarah go upstairs and help Chuck, and goes so far as hold them at gunpoint. Sarah doesn't care, though, and goes anyway. They save Chuck, and Shaw kills Angie Harmon, keeping the world safe for Chuck and his family. But Shaw tells Chuck family and friends make you vulnerable, and spies can't have them. Then, as Chuck and Morgan entertain Casey, Sarah, Ellie, and Awesome, Shaw -- alone at Castle -- mysteriously slips on a wedding ring.
In Buy More land, Morgan becomes assistant manager again, and the crew revolts. Again. This time, Jeffster! (inspired by the adrenaline rush when Chuck flashed and accidentally kicked Lester in the face) forms a fight club in the back room. It's silly and amusing (and their battery-charged cage ends up helping Chuck fight the bad guys), but ultimately gives Morgan the opportunity to play hardball with Lester and earn the guys' respect.
Previously: Awesome had a crazy night, then got kidnapped by the Ring. That's all we need to know, apparently. Now Awesome's on a rooftop with Angie Harmon, who says her name's Sydney. She hangs him over the edge, and then says they need him in tip-top shape. He asks what for, and she says nothing too difficult for one of the CIA's best. He says she has him mixed up with someone else; he's just a doctor. She says they know exactly who he is, Devon, then asks him what it's like being a world-class spy. Back at Castle, Chuck's freaking out and going on and on about how he's not freaking out because that would mean he's overreacting, which isn't possible when his brother-in-law has been kidnapped. He watches Ellie on a surveillance camera, and says she's calling Awesome for the fiftieth time, and she's called him twenty times. Sarah and Casey tell him to calm down, but he can't, so he goes to work, and tells them to let him know the second they hear anything.
Buy More. Big Mike has Morgan in his office, and Morgan's clearly worried, but he says he hasn't even had time to screw anything up. Big Mike says Morgan's become like family to him, and he can thank his mama. "That woman makes me feel good. Real good. Like a man should." Morgan and me: Ew. Big Mike says Morgan's ready to run with the big dogs, and asks him to be his assistant manager. He adds an "I believe in you, Son," and Morgan says yes, then he says he's ready to be a big dog. He barks a high-pitched bark, and Big Mike tells him not to do that, because it's a little dog, like a schnauzer. Big Mike lets out a big-ol' woof.
Outside the office, Jeffster! wants to talk to Chuck because Lester says Jeff is dead wrong about something. Chuck wonders if that isn't Jeff's default setting, then a Chinese customer walks up and asks Chuck a lot of questions about their big sale on HD TVs. Chuck tries to pass her on to Jeffster! but they take off before she can. Chuck sees Sarah and takes off, but the Chinese woman follows and starts yelling at him in Chinese. He flashes on Chinese and starts speaking it, basically telling her to leave him alone since his brother-in-law's been kidnapped. Jeffster! and Sarah watch in awe. The woman runs off, and Chuck hollers behind her that he's sorry and didn't mean to say that. He turns around and Lester says, "Impressive," then asks who would win in a fight between Jean-Claude Van Damme and Steven Segal. Chuck can't believe this is the big question, so Lester starts to demonstrate Seagal's fighting style of aikido. It causes Chuck to flash, and he totally kicks Lester in the face. It's hilarious, and then Jeff says, "Boom, boom, pow." Sarah pulls Chuck aside and says Lester will be fine, and that the last patient Awesome had was a Ring operative. Chuck freaks out again, and says it's all his fault, and just as he says, "I killed Captain Awesome," Awesome walks in and Chuck hugs him, all "Thank god. This is very good news. Tell me you're okay." Awesome says that they think he's a spy, so he's in trouble. Basically, they think he's Chuck. Opening credits then the next edition of "Journey to Vancouver." They're still driving, though Morgan has some broken bones from trying to hug a moose.