In Washington, D.C., an esteemed and charismatic senator on the independent presidential ticket has a genuine chance of becoming leader of the free world. Across the country, in a dank and lonely alley of Los Angeles' skid row, a homeless wino unwittingly becomes the advocate for humankind's continued existence. What do a cantankerous derelict and a respected politician have in common? Just one thing: Both are possessed by beings from the "other side" -- beings destined for a head-on collision to determine the fate of the country -- and the world.