Ryan travels to Mexico — with a stubborn Seth in tow — to put an end to his turmoil in the only way he knows how, but he comes up empty in his quest for revenge. Meanwhile, Seth meets some new friends in Mexico, including a Marine (STEVE-O — "Jackass"), who help him find what he is looking for. Harbor School's new female dean of discipline, Dean Torres (TIA CARRERE — "True Lies," "Relic Hunter"), forces Kaitlin and Julie to work together on Harbor's clothing drive. And the Cohens ostracize Julie when they discover that she was part of Ryan and Seth's activities. Also, after Taylor visits Summer unannounced, the truth about Paris comes out, and Summer continues separating herself from everything related to Newport.