Vicki hosts a dinner party, but Peggy and Alexis stir the pot with a fiery feud. Drama is at such a high boil that Peggy ends up making a game-changing decision. Meanwhile, Gretchen poses nude at a charity photo shoot; newbie housewife Heather Dubrow flaunts her privileged life; Vicki and Tamra embark on an overnight trip to Catalina.