Just like recent Nether Realm games Mortal Kombat XI will have intros. These intros have been gather based on the demo from the live event so we have Raiden, Baraka, Geras, Sub Zero, Scorpion, Skarlet and Sonya.
You will want to check these out as these intros seem to hint at the story I think. We have Scorpion talking about swearing to protect Earth realm with Raiden but also mentioning something bad when talking to Skarlet about her blood magic. Sony mentions to Raiden they might need protection from him as well as being told by Geras that Cassie will defy destiny. Just taste so check it out.
As always thank you for reading.