Plot

Marissa's ties with Volchok send her into a substance abuse downward spiral. Summer is concerned about her friend--and the fate of her father's relationship if things don't improve. Ryan and Sadie's relationship is on the line, as Ryan and Marissa keep finding themselves intertwined in one another's lives. Seth spends some quality time with Kirsten, as she reaches nine months sober. The events at Newport Group turn violent.—snowflakeaudrey

Julie and Dr. Roberts return from their cruise at sea and announce their engagement, leading to fireworks from both Summer and Marissa when Julie moves out of her trailer and into Dr. Roberts' house. Meanwhile, Marissa seeks solace with Volchok and his bad company surfer friends which causes a rift between her and Summer. Ryan tries to move on by dating Sadie, but finds himself not over Marissa. Seeing the specter of Marissa hanging over Ryan, Sadie decides to leave Newport to move back to Portland without saying goodbye to Ryan. Kirsten surprises Seth with a night out to an AA meeting, and Sandy's woes with Matt continue when Henry Griffin continues to insist that Sandy fire Matt from Newport Group for dating his daughter. But this leads to Matt getting beat up after unwisely trying to blackmail Mr. Griffin about some less-than-legal business dealings he's in.