The warning arrived at light speed. The threat didn't.
Across unrelated stars and galaxies, scientists uncover the same impossible response: disturbance, delay, reversal, overshoot, recovery.
Dr Rowan Mercer has spent his career studying how complex systems regulate themselves - and how correction can become catastrophe. Now the same mathematics is appearing in the sky.
Then a weak gravitational precursor reveals something worse. The phenomenon is moving through space at almost the speed of light. It has already crossed Tau Ceti. The Solar System lies ahead.
Humanity cannot stop what is coming. It can only prepare. Power grids must be protected. The Moon must shelter. And Rowan must trust a model that says the first apparent recovery may be the most dangerous moment of all.
As the countdown closes, survival depends not on defeating the impossible, but on understanding it well enough to live through the correction.