Cardinals have no contact with the outside world after the master of liturgical ceremonies utters the words “Extra Omnes” the Latin phrase for “all out,” to ask all those present except the cardinal electors to leave the Sistine Chapel to begin the voting process.

The Oscar-nominated film stars Ralph Fiennes, Stanley Tucci and Isabella Rossellini and offers a fictionalized, high-stakes look at what happens behind the Vatican's closed doors.