At eighteen, the system tells you when you will die.
Every citizen receives a date, a time, and a cause.
For nearly a century, the global prediction network known as Memento has forecast every human death with perfect accuracy.
Until Ari Vale receives no date, no time, and no cause.
When Mira Elian is given only ten days to live, Ari becomes the first person in history forced to fight a future the world believes cannot be changed.
The deeper he digs, the more terrifying the truth becomes.
Memento was never built only to predict death. It was built to test humanity itself.