In any city, in any country, go to any mental institution or halfway house in you can get yourself to. When you reach the front desk, ask to visit someone who calls himself "The Holder of the End".
Should a look of child-like fear come over the worker's face, you will then be taken to a cell in the building. It will be in a deep hidden section of the building. All you will hear is the sound of someone talking to themselves echo the halls. It is in a language that you will not understand, but your very soul will feel unspeakable fear.
Should the talking stop at any time, STOP and quickly say aloud "I'm just passing through, I wish to talk." If you still hear silence, flee. Leave. Do not stop for anything, do not go home, don't stay at an inn, just keep moving, and sleep where your body drops. You will know in the morning if you've escaped.
If the voice in the hall comes back after you utter those words continue on. Upon reaching the cell all you will see is a windowless room with a person in the corner, speaking an unknown language, and cradling something.
The person will only respond to one question. "What happens when they all come together?"
The person will then stare into your eyes and answer your question in horrifying detail. Many go mad in that very cell, some disappear soon after the meeting, and a few end their lives. But most do the worst thing, and look upon the object in the person's hands. You will want to as well. Be warned that if you do, your death will be one of cruelty and unrelenting horror.
Your death will be in that room, by that person's hands.
That object is 1 of 538. They must never come together. Ever.