The Lighthouse's reopening is threatened when its liquor license is turned down due to improprieties on the part of co-owner Jimmy (Tate Donovan). Summer (Rachel Bilson) and Seth (Adam Brody) try to comfort Marissa (Mischa Barton) after she learns the truth about Julie (Melinda Clarke) and Luke (Chris Carmack). Recovering from his near-fatal accident, Luke makes an effort to come clean before exiting the O.C. for good. And in keeping with the title of this episode, Caleb (Alan Dale) startles everyone by proposing to the love of his life.