Where are Kendall and Kylie? The family organizes a search party to track the girls down. Will Kris and Bruce appreciate their little game? Then, while on a canoeing cruise, Khloe starts to feel guilty about leaving Rob behind. She announces her plans to go home early and gets into a serious cat fight with Kim. Can they convince Khloe to stay? Plus, after Kim joins in on the teasing for his "half-chub" comment, Brody turns the tables with a sexy prank of his own!