Kim and Kourtney force Khloe to take a sentimental sister trip to Palm Springs to relive some of their fondest childhood memories. Meanwhile, Rob meets with a life coach to save his failing relationship; and Kris receives an outrageous proposition from a royal family for her eggs.

Kim becomes torn over maintaining a relationship with Cait; she confirms that her mom's reasons for cutting ties is valid; Kendall introduces her sisters to the first openly gay royal; Rob implements his own time of the month.