The Gringos

Ryan and Seth leave the O.C. to go south of the border, each to find something they're looking for -- Ryan searches for Volchok in order to deal with his emotions and Seth has an encounter with the U.S. Marines. Meanwhile, Julie and Kaitlin are forced by the Dean to work together on the Harbor school clothing drive and Julie is shut out by the Cohens when they discover what she's up to. Elsewhere, Taylor springs a surprise visit on Summer who continues to distance herself from California.