The new Mortal Kombat takes place 25 years after the last one and a lot has changed in Outworld. The stars of the tournament, for one, are new. Mostly the sons and daughters of former fighters, the new entries have a lot of bad blood already. Basically, Mortal Kombat has turned into the Grangerfords and the Shepherdsons. Don't get the reference? Take a moment before MKX arrives and read a book (preferably Huckleberry Finn).
Turns out that fighting is ultimately about motivation.