Kim Kardashian's security team is dead serious in their job. They are probably the best in the field but, in a rare instance, they failed to recognize a Kardashian that resulted in an injury of one of the main cast members of Keeping Up With The Kardashians Season 17.

In the recently released teaser for the upcoming episode of KUWTK Season 17, Kim received a frantic call from her sister, Khloe Kardashian, to tell her about what happened to their mother, Kris Jenner. Khloe told Kim that the latter's security team tackled Kris to the ground.

The clip started with Kim driving around with her BFF and food connoisseur Jonathan Cheban when she receives a call from Khloe. She told Kim about what happened and told her that they already called 911.

"We were in the backyard and Mom came down when she shouldn't have. I told her to go around and they just tackled her," Khloe explains.

It looks like Kris, 63, entered Kim's house through the back door and the reality star's security team probably did not recognize her and tackled her. When Khloe hangs up the phone to help Kris, Kim immediately checks the footage of their security camera on her phone.

It is unclear in the clip whether or not the Kardashian matriarch suffered serious injuries from the incident, but she can be heard moaning in pain in the background. In the earlier Keeping Up With The Kardashians Season 17 teaser, Kris was shown on a stretcher with a brace on her neck. Some EMT members were also seen attending on her. She was also heard exclaiming, "Oh, my neck!"

Kim and her family upped their security details after she was robbed at gunpoint in Paris in 2016. Kim's husband, Kanye West, hired a round-the-clock security team to secure his family's safety.

Aside from Kris' health scare, fans could also expect more drama in the family in Keeping Up With The Kardashians Season 17. Kim will also have a possible health problem. West's wife tells her mother that she thinks she has lupus. Kris tells her to stay positive and wait for her test result.

Aside from the security team incident, Kris will also be dealing with the tabloid rumors that she had an affair with O.J. Simpson. Scott Disick and Corey Gamble will have an argument this season while Kourtney will butt heads with her sister Kim and Khloé over work commitments. Keeping Up With The Kardashians Season 17 airs every Sundays at 9 p.m. ET on E!