Somewhere in the world, a human meets a glitch in the system, manifested as a demon. Whether through trickery or sympathy, they come to an agreement. In exchange for becoming the demon's living vessel, a single wish is granted.

This happens several dozen times with several dozen people, simultaneously, independently, with the finality of the first note of a song. Fates unmet, yet intertwined.

66 days later, the true cost of their pact is revealed: an impossible debt to a Champion of Hell. A Symphony rapidly unfolds before them as they come to know the true nature of the world and its mechanical divinity. Now banded together under a single cause, the new pactholders seek out their angelic kin and strongholds to destroy them one by one.

To make a mark upon the God Machine is a Sisyphean ordeal - their fellows in the Symphony are quick to inform them of that. But not all is lost - perhaps they will find a name for themselves all the same...