Rob has a hard time convincing his sisters in KUWTK season 12 episode 9

        

News of Rob Kardashian and Blac Chyna's engagement has caused a rift in the previous episode.
Keeping Up With The Kardashians returns this week with yet another episode where the Rob-Blac Chyna engagement will once again be the highlight of the family drama. 

In season 12 episode 9 of the popular reality TV show titled Oh Baby, the Kardashian sisters will return from their trip to Vail in Colorado and will confront their brother Rob about his sudden engagement news.

Rob had given his family– who were enjoying a ski-trip in the previous episode – quite a shock after he broke the news of his sudden engagement with Chyna through social media. Disappointed with the fact that the family was not kept in the loop, the siblings and Kardashian matriarch Kris Jenner had called out on Rob.

The trailer for Sunday's episode reveals that there will finally be a conclusion to the entire fiasco that started two weeks back. In the video, the narrator says "Sunday, the gloves are off," as Rob is shown getting questioned by Kim, Kourtney, and Khloe about his engagement with Chyna. "If you guys really were concerned, you guys would have said 'Is this true'?" Rob shot back at his sisters, who were trying to express their disappointment.

However, the 29-year-old reality TV star will be successful in reasoning with his sisters, as he explains to them the reasons why he didn't inform them before proposing his fiancée.

At the end of the trailer, Kim says, "We see that you are happy and that is all that matters to us... we obviously have tried to get you out of the house for years... and that hasn't worked. If someone else could do that, we are really thankful for that."