The sisters try to fix Rob and Chyna's relationship after the couple get into an explosive fight; the family set their sights on ending Khloe's streak of bad birthdays; and Kourtney panics about having to go on press tour without her siblings.

Kourtney is distracted during a sister getaway with Kendall; Kim stages an unwelcome intervention on Khloé's wardrobe.

Kris reluctantly allows Kim to take over the annual Christmas Eve party; Khloé must come to the rescue when North's hamster dies; Kris tries to understand the unconventional relationship between Kourtney, Scott and his girlfriend.