AllMovie

As several of the younger O.C.ers plan an end-of-summer trip to Tijuana, Sandy Cohen (Adam Brody) takes a new legal job that disturbs his social-climbing wife, Kirsten (Kelly Rowan) -- who in turn must now fend off her suddenly amorous neighbor Jimmy Cooper (Tate Donovan). The sojourn into Mexico swings from delightful to disturbing when Marissa Cooper (Mischa Barton) finds out about her parents' divorce and learns the whole truth about her boyfriend, Luke (Chris Carmack), all at once. A near-tragedy results when Marissa tries to "solve" her troubles in an extremely dangerous fashion.