Kim becomes too friendly with Khloe's ex, Khloé must put her foot down and set some boundaries. Kylie prepares to debut her Kylie Cosmetics collaboration with Balmain at Paris Fashion Week, but Kris grows concerned when Kylie becomes too sick to travel. Tension boils over when Kim and Khloé confront Kourtney over her recent attitude, leading to an explosive fight between the sisters.

When Kris is at a sexual peak in her relationship, she feels guilty Khloé is going through a dry spell and tries to push her to date again. Scott panics over an upcoming speaking engagement.