Every city has two lives.

When the doors are locked and the television goes dark, an entirely different society comes alive: beneath the streets, behind unmarked doors, across abandoned rooftops, and aboard ships that officially don't exist.

For centuries it has kept a delicate balance. Rival organizations fight for influence, fortunes change hands, and shadow wars are fought, all while the human world stays blissfully unaware.

In the city of Greyport, that balance is about to collapse.