Ten million light-years from Earth, a physics survey became a first-contact emergency.
In the year 2661, humanity launched the Cygnus Program, an interstellar mission designed to investigate the profound physics of binary black hole systems.
Utilizing an Alcubierre-metric drive, the crew of the Surveyor-9 jumped ten million light-years to study the final stages of a galactic-scale orbital decay.
They expected a physics survey.
They found a Type III civilization cold war.
The system is a celestial engine. This megastructure is the result of an ancient schism: two factions once shared a common ancestry before the Ring Engineers obsessed over the Dyson-scale harvest of the accretion disk.
While the Ring Engineers remained trapped in the time-dilated gravity of the engine, locked in their original mission to sterilize any biological variables that might threaten their existence, the Custodians moved on. Having evolved beyond the conflict, the Custodians have become indifferent observers of the very engine they once helped conceive.
To protect their system, the Ring Engineers have gimbaled a relativistic jet into a sterilization corridor: a focused beam of high-energy particles designed to prune emerging biological variables. Having suffered a devastating attack in their past, they now pre-emptively disrupt anything that could eventually destabilise them.
The Surveyor-9 team realises that Earth lies directly in the path of the sterilization corridor. Because of the sheer distance and the speed of light, the beam is already on its way.
There is no warning to send that travels faster than the thing being warned about.
To the Ring Engineers, Earth's destruction isn't an act of war. It is a mathematical correction.
CYGNUS is a countdown with no clock anyone can agree on. While the crew navigates the crushing time dilation and gravitational shear of the binary system, they must find a way to disrupt a Type III engineering project using their own rudimentary capabilities.
It is a story of human ingenuity against cosmic indifference.
We aren't fighting a villain. We are fighting celestial inevitability.
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