When Seth visits Summer at Brown, he finds that she was returned to Newport. Sandy and Kirsten try to find an opportunity to bond with Ryan, who is in a infatuated with Taylor. Kaitlin meets the mean girl of Harbor, and she decides to outdo her by throwing a party of her own at the Roberts house. Meanwhile, details from Che's past are revealed and Julie Cooper learns that her company, Newmatch, is no longer just a dating service.