Ash was raised by a wise and kind grandfather Greyheir, a leader of the last stronghold of humanity, an island surrounded by a limitless wasteland.

One night, Greyheir was found dead and Ash's girlfriend disappeared. Ash cannot remember what happened that mysterious night; moreover, he is put under home arrest for a crime he never committed. After a year of this lonely misery, Ash will is broken. He decides to kill himself and at that moment, he gets a message left by his perished grandfather.

Ash discovers that the world has not been destroyed and the islanders are actually primitive outcasts from the technologically advanced world. Now, the world is consumed by senior communism, a political regime in which any person who reached 60 years old is treated as a god. He also discovers that Greyheir was the man behind this.

Being an heir of a great leader, Ash becomes one of the most significant figures in the new world. However, the new impressions of the strange world of tomorrow are faded very fast. A group of revolutionaries, whose leader Morphan claims to be immortal, threatens to destroy the world and their first target will be the island.