In a world destroyed by demons, William Virtu, a highly skilled and cunning individual with talent in magic and swordsmanship, but low power, has lost many opportunities due to his old age and poor background.

The last living survivors of the races are cornered in the bastion.

Despite being close to death, William decides to make a final stand against the demons outside.

Little does he know that he possesses the time crystal, one of the twelve attribute crystals, and in a desperate move, he swallows it to prevent his enemies from getting their hands on it.

Suddenly, he finds himself transported to the past, with the chance to change the course of history and prevent the demon invasion. Follow William's journey through time as he uses his intelligence, ruthlessness, and talent to restore peace to a world on the brink of destruction.