What do you think of my theory?

this could be a prequel to prometheus the engineer who sacraficed himself was not creating life on earth but instead accelerating intelligence which is exactly what prometheus did? when they returned to earth years later they took loads of humans back to their militaryscience base on lv -233 as hosts for their new creation the xenos,but some humans managed to escape/break free steal some weapons etc then after some time of the engineers/humans killing each other at the end of the movie the humans come accross the xeno's lair where there been held made etc...they set the xenos free and all hell breaks lose this is what we see in the holograms the engineers running away and being likked by their own creations,this is why they then decide to travel back to earth to destroy us because oh what these few humasn did but of course their all killed by the xenos so never get to leave the planet,apart from 1 guy of course thats why in prometheus when we wake him he has a hatred for us and tries to resume the plan immediatly of going to earth n destroying us. what you think?