When United States President Lex Luthor uses the oncoming trajectory ofa Kryptonite asteroid to frame Superman and declare a $1 billion bountyon the heads of the Man of Steel and his "partner in crime," Batman,heroes and villains alike launch a relentless pursuit of Superman andBatman,who must unite – and recruit help – to stave off theonslaught,stop the asteroid and expose Luthors devious plot to takecommand of far more than North America.