The king is dead.

No heir. No clear successor.
Only three powerful houses - and a kingdom about to fracture.

Iselde Fenn, the Court Cartographer, is summoned to seal the king's private chamber. Inside, she glimpses something impossible: maps that don't match any known territory.

Then the commissions begin.

Each house demands a survey of their lands - individually, urgently, secretly. But as Iselde traces their borders, a pattern emerges. Every map avoids the same place.

A missing region.

A deliberate absence.

A territory erased from history.

What begins as a cartographic anomaly becomes a discovery that threatens to rewrite the rules of succession itself. Because hidden within that absence is a fourth claimant - one with a stronger right than any of the three competing houses.

And unlike the others...

She does not want the throne.