What if the aliens kidnap the princess of the United States and you had to find various upgrades to your armor to make yourself powerful enough to gain access to their Earth base but when you get there, you find it is already unlocked and everyone is dead because the aliens couldn't handle our bacteria and so there is no final boss and it is a twist ending but then you see Tom Cruise walking the street with Dakota Fanning so you just figure, hey, I've got all these upgrades, misght as well use them for something and you torch them and the Pre-crime unit arrives and thanks you for helping stop the man who was going to murder Hitler in a premeditated murder and you're all like, I don't even care, and then you get call that there is suddenly a new alien threat and you're all like, bring on the sequel.