The kids go off visiting their colleges for pre-frosh weekend, which fortunately happens at the same time on all college campuses. Seth somehow sneaks into Brown's weekend even though he wasn't accepted there. And after this episode, he still isn't, despite getting a meeting with the some important Brown guy, and really, really wanting to. All is not lost though, because Seth gets to spend time with Anna, back after two years and ready to go to Brown herself. Ryan gets his own blast from the past when Kirsten spots Theresa in an airport -- with her son! Kirsten tells Ryan, and he comes rocketing back from Berkeley to track Theresa down and ask her about it. We find out that the baby isn't Ryan's and that Theresa has somehow managed to become a successful executive, despite not having gone to college or possibly even finishing high school. Marissa makes a magical transformation back into an upright citizen, but goes back to Volchok after not feeling comfortable at Berkeley and seeing that he rented The Sound of Music to know more about her, which was really sweet of him. Sandy and Kirsten keep fighting, ending in Kirsten leaving a hospital dinner after telling the table that she ended up marrying her father. She takes a glass of wine out with her, and drinks the whole thing down in one big shameful gulp.
Well, here we are at the twenty-second episode of the season, which means that it's the season finale! I'm really looking forward to my summer vacation from this show and...wait, what's that you say? The O.C. is doing twenty-five episodes this season? But...why? Shouldn't shows that suck have as few opportunities as possible to be seen? Goddammit.
Ryan and Seth show off the bags they've packed for their college pre-frosh weekend trips. Seth is surprised at the large size of Ryan's package (hee hee), since Ryan only owns "a wifebeater and two hoodies." And yet, all he ever seems to wear these days are those button-down shirts that it's completely unrealistic for a high-school student who's supposed to be from the wrong side of tracks to wear. Ryan says that he packed everything because he didn't know what a prospective college student is supposed to dress like. I imagine that they dress like everyone else does, Ryan. There's no secret clothing code there. Seth says that he's packing light, seeing as the pre-frosh weekend he's attending is one that he isn't even invited to. This is all a part of Ryan and Seth's master plan to get Seth into Brown and Summer's heart. Unfortunately, this is also the only part of their plan. After Seth gets on the campus, they've got nothing. Kirsten breezes into the kitchen, ready to drop the kids off at the airport and get all weepy that they will soon be leaving home for good. Sandy, of course, is too busy being an Evil Businessman to care about his sons' college plans, and will not be accompanying them to the airport.
At the airport, there's an awkward moment where Ryan and Seth avoid hugging each other goodbye, and then Seth is off to his gate. This gives Kirsten and Ryan some time to talk. Ryan admits to being nervous about going to college, and Kirsten gives him a pep talk to the effect that if he can "conquer" Newport, he'll be fine at Berkeley. Maybe he'll only get himself arrested, like, four times there and limit his physical altercations to one a week. That would be a nice improvement. They hug, and Ryan is off to his gate.
Once Ryan's gone, Kirsten turns to see a familiar face coming down some stairs. It's Theresa...and a woman holding what appears to be Theresa's son. You know, the one she told Ryan she miscarried. That baby. Kirsten is so surprised that she doesn't even tilt her head or anything! I guess she, like the rest of us, just assumed that Theresa was still in Atlanta.