Okay, here are my ideas. Not in order.
-tournament
-possibly fight each other (In the tourney), maybe a few bitter feelings we have to begrudgingly put aside
-cliche interruption, enemies stealing the prize money as suggested by others, maybe the previous androids to 12 would be possible bad guys?
-beat up on some npcs in the tourney, maybe a brief narration of the preliminaries
-chase the bad guys
All I got.