Quan Chi and Shang Tsung's deadly alliance i belive

Dunno about tournament though

I think the movie should be based upon possesing an amulet that belongs to Shinnok. The whole movie has each character going after the amulet so that they could protect their realm.

The bad guys in the movie could be in it for power, or safety under their masters. The bad guys would decieve each other for possesion of the amulet.