Hook up with what's coming down as the Core Four romances of Ryan-and-Marissa and Seth-and-Summer may (or may not) go from very over to very on, Sandy and Kirsten face choices that could trainwreck their 20-year marriage, felon (and Ryan's brother) Trey gives Newport living a try, Julie's lurid past comes back to haunt her, and other new hunks and hotties become part of the coastal scene. Live. Laugh. Lie. Cheat. Grow. Share. Connive. Love. In California's beach paradise, they do everything under the sun.