(It's a normal day in your average prehistoric life. Nothing interesting is happening. Until a portal appears in front of you. It glows and emits some low humming noises, begging you to come closer. You walk into the portal out of curiosity. And enter an arena...)

The arena is decorated with several dinosaur bones, and surrounded by large rock formation. There is no escape here. Then more portals appear, and other T Rexes come out of those. Each varying in appearance and size. They all growl, snarl or hiss at each other, before one roars loudly and charges towards another Rex. And soon the other fall suit, and begin attacking each other