It's all going down in the brand new KUWTK trailer
Kim and Kourtney come face to face in the trailer for the upcoming 18th season of KUWTK.
The pair have been feuding for some time now and it looks like they've both reached tipping point.
The trailer begins with Khloé posing as her mother Kris Jenner.
She tells viewers, "I wanna read you an amazing story - 'The great book of Kardashian Jenner tales.'"
"Once upon a time, there lived a powerful queen who gave birth to five princesses, each with their own gifts and passions..."
As clips of the family flash across the screen, 'Kris' continues, "From health to beauty to humor."
"But as their kingdom grew stronger, so, too, did the burdens that came with it."
Kourtney is shown standing up to her sister Kim, "I will f**k you up, you literal a**hole."
Khloé watches from the sidelines but is forced to intervene when the argument turns physical.
The fight moves from one end of the room to the other before Kourtney slaps Kim across the face.
Khloé, posing as Kris, addresses the camera, "Oh, you want to know what happens? Well, honey, you've got to stay tuned."
KUWTK returns tomorrow, March 26th on E!
It seems Kourtney isn't the only one in Kim's bad books.
She's been feuding with Taylor Swift after footage of the singer's full infamous phone call with Kanye West emerged online.
Read more here.