After a global catastrophe, the last dregs of humanity huddle up in enormous underground bunkers. With one exception: Cassiopeia, the last capital of humanity.
Access to the city is invite-only. Whenever a citizen dies a call is sent out through Gaeanet, detailing the conditions for acceptance, the guidelines for selection.
There have been treasure hunts, fights to the death, tests of skills, and duels of wits... But this time? The request is cruel, the task impossible.
"Come to Cassiopeia."
"Reach the city by any means and you shall have a place amongst us."