A peaceful, calm island in a corner of Japan with a boundless blue sky and ocean.
An ordinary day should have begun…

“Are you there?”

Tatsumiyajima, which hides from both the human army and Festum, the enemy from outer space, is detected by Festum and falls into a crisis.
The unexpected message sent through the sky means an attack by the enemy.
The breathtakingly beautiful light shining in the blue sky is a flash that leads the people of Tatsumiyajima to a harsh reality.

The enemy has appeared suddenly out of nowhere.
Children, who knew nothing about it, are tossed around by the great tide of fate.

What should humans do to survive?

A boy named Kazuki Makabe decides to pilot a Fafner to survive.