The tag line, which my brother actually came up with, is "12 Angry Men, but monotheistic religion is on trial."
Basically, the leaders of monotheistic religion e.g. the Pope, Grand Mufti of Saudi Arabia, Archbishop of Canterbury etc. meet in Jerusalem at Easter for some huge religious occasion, but when a disaster develops outside, these men and their people all take cover in the Church of the Holy Sepulcher and can do nothing but wait this disaster out with only each other to talk to.
Basically, the leaders of monotheistic religion e.g. the Pope, Grand Mufti of Saudi Arabia, Archbishop of Canterbury etc. meet in Jerusalem at Easter for some huge religious occasion, but when a disaster develops outside, these men and their people all take cover in the Church of the Holy Sepulcher and can do nothing but wait this disaster out with only each other to talk to.