Just when they thought their relationship couldn't get any worse...

Under mysterious circumstances, Yuzuru and his sister Sara find their lives uprooted as they are brought into Arcadia - a fantasy game world unlike any they can imagine.

Separated and lost, they must each come to terms with their new reality and fight to survive. But as the race to save the world and themselves begin, they come to realize there are gods at work here, and they are but pawns.