Kourtney Kardashian Cries Over Scott Disick Cheating Rumors on 'Keeping Up With the Kardashians'

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Kourtney Kardashian and Scott Disick’s breakup drama is about to play out on Keeping Up With the Kardashians.

WATCH: Scott Disick Breaks Silence, Makes First Public Appearance Since Split in Las Vegas

A sneak peek posted to the show’s Facebook page shows Scott’s return to partying -- a "crazy bender," according to Kourtney -- and the family first learning of Disick’s intimate vacation with ex-girlfriend Chloe Bartoli.

"He’s a piece of s***," Kris exclaims upon first seeing the incriminating pics.

"I’ve worked so hard to keep this family together," Kourtney tearfully tells Kim.

WATCH: Kris Jenner on Kourtney Kardashian's Split: 'She's Kind of My Hero Right Now'

Upcoming episodes of the reality show will also explore the drama over Khloe’s continued contact with ex-husband Lamar Odom, and the Kardashian/Jenner clan’s perspective as they deal with Caitlyn Jenner’s transition, including the first time the girls see Caitlyn’s Vanity Fair piece and how daughters Kylie and Kendall deal with media questions about their parents.

"The only thing is I haven’t met her," Kendall says to her sisters.

"I’m not gonna be fully supportive if she’s not fully supportive of our mom," Khloe contends.

"I still have a long way to go before I can process all of this," Kris tells the cameras before tearfully admitting to Kim, "He’s gone."

Keeping Up With the Kardashians
airs Sundays at 8 p.m. ET/PT on E!.

WATCH: Kourtney Kardashian Splits From Scott Disick After He's Spotted With Another Woman

Sneak Peek of What's to Come on KUWTK!

Kris Jenner struggling with the new change in her family, Kourtney Kardashian breaking down over Scott Disick, Khloe Kardashian talking to Lamar Odom and more. Nothing is off limits. See what's to come on #KUWTK!

Posted by Keeping Up With The Kardashians on E! on Monday, September 21, 2015