there are so many things flying through my head right now. you could really jsut do anything... liek silient film, public announcement, or some intense scene like a guy trying to beat a count down, or maybe have the count down there and when the timer runs out something horribel happens. these are jsut random things i was thinking. but like wicker man said. they are suggestions.
i jsut recomend you stay away from a fight scene! haha the horrible memories with that
how about, jason voorhees has a younger brother called aaron, but aarons a normal nice teenager. but one day freddy possesses him and commands him to hunt down jason and kill him, so he gets a machete and hockey mask and searches for jason, but along the way he runs into teenagers and trys to kill them? it can be called "thursday the 12th" or "saturday the 14th"