Penny becomes addicted to an online game, based on the world of Conan the Barbarian, and persistantly pesters Sheldon for advice.
While House works to save Stacy's husband, he cannot help but think his feelings for her may have reignited.
Julie and Dr Roberts become engaged, and Marissa drifts away from Summer.
Betty lures a famous photographer (Rhys Coiro) to shoot for the magazine.