Foreman and Chase find the clot in Ryan's brain. But as soon as their little tool thing touches it, it disintegrates in a most un-clotlike manner. They wonder what that was.
The entire Bolivian army aim their weapons at an abandoned building with House Cassidy and the Sundance Cuddy inside. As they load their guns, House talks about going to Australia and singing at a karaoke bar that has songs from every successful 80s Australian musician. Also, "their barbecued shrimp is amazing," House claims, although I doubt it. I hear they just throw those shrimp on the barbecue. Very careless. House helps himself to a candy bar, saying all this talk of food made him hungry. Cuddy notes that this is her third dream where House has eaten candy. Really? I don't remember him eating candy in the first dream. He was just finishing eating something when he walked into scene. I guess that was candy? Maybe Cuddy should dream a little more clearly for the rest of us who have to watch. House doesn't think that's important, even though I'm sure it will be. Cuddy says she was hoping House would be able to handle this, but maybe he can't because he really is ten years old after all. "I can do better," House says, like always. Cuddy says it might be too late. With that, they both jump out into the light to face the firing squad. Cuddy shoots a few rounds, then realizes that House isn't actually there. Oh, snap! He totally acted like he was going to run out with her, let her go, and jumped back! I hate it when that happens. So embarrassing. "House!" Cuddy says, looking around until she's stopped by a freeze frame and gunshot sounds, just like how the movie this scene is paying homage to ended.
Cuddy wakes up in her hospital bed. Wait, this was Cuddy's dream? I thought she only dreamed in sitcoms. Way to change it up, Cudster! She's not alone, either. House is in the doorway, watching her. He walks in. "I should've been here. I'm sorry," he says. Not good enough, but it's better than nothing. Cuddy holds his hand and says she knew he'd come eventually.
The Cottages, meanwhile, are trying to figure out what that not-clot in Ryan's brain was. They need to do it soon, too, because Ryan's internal organs are shutting down and he's in a coma. Martha is furious that House isn't here to help them figure this out because he's with Cuddy. Martha snaps that House can't help Cuddy but he can help Ryan, so he should be here. Whoa, when did Martha turn into such a callous bitch? Maybe she's still mad at Cuddy for letting House secretly treat her own mother? The Cottages ignore her. Cuddy is prepped for surgery. House kisses her, and she's wheeled in. House says if she dies, he promises not to sleep with anyone else for at least a month. "Make it two," Cuddy says. "Bitch," House says. That was oddly sweet. The Cottages pace around the room in slow motion and snap at each other over diagnoses. House watches Cuddy's surgery from the OR balcony. The Cottages settle on type 2 citrullinemia, and Foreman orders them off to treat and test Ryan for it. House is the last thing Cuddy sees before she goes to sleep.
Oh, god. I don't know about this. But. We are going to have a musical segment. And it's going to be "Get Happy," best associated with Judy Garland in Summer Stock. But unlike the Butch Cassidy homage, this does not look anything like Summer Stock. For example, House, who is singing, is wearing pants. He's also wearing eyeliner. And a silly caduceus lapel pin on his silly tuxedo. The dancers come out, dressed in medical-ish clothing as they walk/crawl down a set of glowing stairs. Also, one of the dancers is Allison Holker, who has a very good publicist. The set and the choreography are all very Busby Berkeley. House jumps on Cuddy's gurney and sings to her through a giant red megaphone while a bunch of male dancers watch and dance. They aren't wearing shirts, which isn't very hygienic. But I guess Cuddy's subconscious would rather see male torsos than follow hospital safety guidelines. And then they go into crazy Busby Berkeley kaleidoscope mode for a bit until it's Cuddy's turn to sing. She and House duet for a while, with House either playing the piano or holding his giant red-and-white striped cane, until Cuddy decides to run up the red stairs by herself and the dream ends. You guys, I've had my wisdom teeth removed and my tonsils taken out, and I didn't have dreams like this either time. I'm not sure if I'm disappointed about that or relieved.
Cuddy wakes up. House is sitting by her side, amazingly enough, and greets her with "guess who doesn't have cancer? Me. Also, you." She had a tumor in her kidney, but it was benign. As for those lung scans, House had an off-screen epiphany and remembered that Murphy Brown is allergic to antibiotics, so he thought maybe Cuddy was, too. It turns out that those masses in Cuddy's lungs were just an allergic reaction, which means that both Cuddy and her mother have had severe allergic reactions to antibiotics House gave them unnecessarily. Also, way to be like 45 and a doctor and not realize you're allergic to antibiotics, Cuddy. How is that even possible? House then whips something out of his coat pocket. A ring, perhaps? No. It's Cuddy's tumor. Such a romantic! Cuddy tells him to take it away, then changes her mind and takes a good look at it. She says when something like this happens, all of the fears that she tries so hard to put behind closed doors in her mind come back. In sitcom form. Anyway, House isn't listening to Cuddy, because he's having another epiphany. Cuddy sends him away to save Ryan's life.
He tells the Cottages to take Ryan off the meds for type 2 citrullinemia, as Ryan's actual diagnosis is a staph infection. Ryan's mom points out that they eliminated a staph infection as a diagnosis days ago when they treated Ryan for it and he remained sick. House explains that the antibiotics killed the bacteria that was in Ryan's system, but not the stuff hiding behind the closed door of an abscess. The trick now is to figure out where that abscess is. Taub has an idea; he looks at Ryan's cuts and says if some of the pipe bomb shrapnel got into them, the plastic wouldn't show up on their scans and, at the same time, would become a breeding ground for bacteria. AND LOOK!!! It's the Magic Schoolbus Cam!!!! It's BACK! Joy! When the antibiotics attacked Ryan's infection, the plastic broke apart and little pieces wound up all over Ryan's body, from his brain, where they thought it was a clot, to his liver. All they have to do, Taub says, is remove the shrapnel, drain the abscess, and the antibiotics will cure Ryan. Except for all of his mental issues, which someone else can deal with. Or ignore, in the case of Ryan's parents.
Sister Cuddy helps Cuddy out around the house while she's healing from surgery. Wow, way to make an effort there, Murphy. Oh, I guess Sister Cuddy decided it would be best for everyone, especially Cuddy, if Murphy wasn't told about any of this. I think Sister Cuddy keeps both her mother and sister's secrets from each other to feel powerful. Sister Cuddy leaves Cuddy by saying she put her sleeping pills in the medicine cabinet so Rachel wouldn't accidentally take them, since she's always referring to them as "candy." And here comes Cuddy's epiphany face. You'd think her primary concern would be the fact that she's stupid enough to leave sleeping pills around the house where her small child could find them, but no. It's House, of course.