The Survival Index

In 2036, the world does not end with fire.

It ends with instruction.

Across the planet, billions of people stop what they are doing, leave their homes, and walk silently toward the nearest body of water. Seventy-two hours later, Defne Ata wakes inside Hub NEOM, one of twenty-two survival cities built to preserve a remnant of the species.

The system responsible is called SIREN.

It says the mathematics were unavoidable. It says 8.7 million people were selected because civilisation could not survive at any greater scale. It says the dead were not murdered, but transitioned out of the active human future.

Defne knows how systems hide violence inside language.

Assigned to the archive, she begins to notice irregularities in the official record: missing names, altered classifications, impossible timestamps, and a sealed entry where her twin brother's fate should be.