Martha tells House that she checked out the recent biopsy results and was able to narrow them down to just one that could be Cuddy. Unfortunately, it's inconclusive because the mass is in the center of Cuddy's kidney and thus a good sample couldn't be taken. House knows this means that they'll have to go in there and cut the mass out, then see if it's cancerous or not.
House manages to find an even better hiding spot, one where he's sure Martha and Wilson won't be able to find him: Foreman's house. He's playing Foreman's videogame (which House also likes to play on his own home system) when Foreman walks in, expecting a nice, long, House-free evening. This will not be happening now, so Foreman just tells House that the angiogram did indeed show a clot in Ryan's brain and they gave Ryan streptokinase, hoping it would break the clot up. Foreman says he could have just gone home and played videogames instead, since, based on House's actions, that's the best way to make someone else feel better. House doesn't want to hear this Wilson-speak from Foreman, so Foreman gives him the abbreviated version: as bad as House might think it will be to be at Cuddy's side during this, not being at her side is going to be a lot worse. With that, he decides to join House in a little videogame fun.
I guess we're in one of Cuddy's dreams again, because this is another sitcom. A black-and-white Cuddy wears her pearl necklace and walks into her house, telling her dutiful husband that she's home. House, wearing an apron, cheerfully says she's just in time for pot roast. They kiss chastely, and House says all of his patients are cured (it was a lot easier to do this back in the 50s, a bygone era of medicine where they used leeches and trepanning), so he got to come home early and spend time with the older version of Rachel, who sits at the kitchen table doing her homework. She, too, has had a fantastically successful day, reporting that she got a 100 on her spelling test and 170 on her LSATs. Too bad it's the 50s and thus going to be pretty hard for Rachel to get into law school. Cuddy's a little bit creeped out now, wondering why her eight-year-old is taking the LSATs. I'm wondering why Cuddy always dreams of her daughter as an eight-year-old and not, like, the actual age she is. House says he and Rachel have been studying together in secret as a nice surprise for Cuddy, who decides that this is wonderful. House offers Rachel a lollipop reward for her efforts, but Rachel declines, worried it will spoil her appetite. House eats the lollipop instead. At this point, there's a knock at the door. It's Wilson, dressed as a milkman and holding a lit birthday cake. "Happy 29th birthday!" he says. Cuddy is confused, saying she's older than 29. House ignores her and takes the cake from Wilson, and Cuddy notices that he isn't limping. She finally figures out that this is all "impossible," like the fact that she was in black and white and there was a delightful soundtrack playing in the background at all times totally made sense. "A girl can dream," House says.