Kim and Khloé try to get to the root of Kourtney's bad attitude, which ignites another huge fight between the girls; Kim makes Kendall a promise she can't keep; and Khloé and Scott formulate a plan to prove Kris isn't the art expert she claims to be.

After an intense few weeks of fighting with her sisters, Kourtney considers spending the holidays away from her family; Khloé hides from the critical public eye until her pregnancy announcement; Kris fears she's being poisoned.