When not mired in the corporate rat race, Wall Street executive Bart Hughes is king of his sleek Manhattan brownstone. Suddenly his castle is under siege. Bart takes a stand - with his survival and sanity at stake. Peter Weller plays Bart in 'Of Unknown Origin'. The film draws us into yet another rat race, namely one with an intruder that's formidable, persistent and clever enough to draw Bart along on an unwitting path to self-destruction. In the battle of man vs beast, push has come to scream.