A mysterious book of prophecies, written by a sixth century Irish monk, has puzzled scholars through the ages. Foretelling wars, plagues and rebellions, the Black Book of Bran is said to have predicted the Black Death and the Gunpowder Plot. But is it the result of divine inspiration or the ravings of a madman? A hidden hoard of Saxon gold. A poisoned priest. A monk skinned alive in Westminster Abbey.
Days after winning OASIS Founder James Halliday's contest, Wade Watts makes a discovery that changes everything. Hidden within Halliday's vaults, waiting for his heir to find, lies a technological advancement that will once again change the world and make the OASIS a thousand times more wondrous - and addictive - than even Wade dreamed possible. With it comes a new riddle and a new quest - a last Easter egg...