There shall be a great winter unlike any other that will last for three years. Mankind will become so desperate for the necessities of life that all laws and morals will fade away.
The wolves Skoll and Hati, who have hunted the sun and moon since the beginning of time will finally catch their pray, leaving nothing but a black void in the heavens.
Yggsdrasil, the great tree that holds the cosmos together, will tremble and all the trees and mountains will fall to the ground.
The chain that has been holding back the monstrous wolf Fenrir will snap, and the beast will run free. Jormungand (the mighty serpent who dwells at the bottom of the ocean) will rise from the depths, spilling the seas over earth as he makes landfall.
A ship made from from fingernails and toenails will sail over the flooded earth. Its crew will be an army of giants, the force of chaos and destruction, and its leader will be the traitor of the giants, Loki.
Fenrir will run across the earth, with his lower jaw on the ground and his upper jaw against the top of the sky, devouring everything in his path.