70 AD. A group of Roman soldiers crossing the Sahara desert is destroyed by a ferocious and mysterious presence hidden in a solitary tower at the extreme borders of the sea of sand. The sole survivor, the Etruscan seer Avile Vipinas, is inexplicably saved by the sound of his silver sistrum.
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...