You receive this quest from Mikey who is in the Boardroom of Gods.
He shows you a book that talks about an invicnbile creature that has a ring that gives great strength.
He asks if you think you can get the ring.
He says the map at the back of the book says the creatures name is Wicken Fen,
He Says theres a bog by that name in the mideast of Loegria.
You will receieve the Bring a Ring quest.