Everly, a sward mantis crawler, sits trapped in a sand-filled chamber with her last two mercenaries while the ceiling slowly descends. The dwarf desperately digs for a keyhole they cannot use because the key was lost above, while the ogre first tries to hold up the ceiling and then joins the futile digging. Watching them, Everly recognizes the moment her mother once called the Inevitable Ruin: the point when hope is gone and only reflection remains.

Everly remembers how the eighth floor presented a vast grassland full of downward holes, plus a central tower that warned entrants they would have to reach the top before returning down. Everly received a sponsor box from Dictum Waystation Controls, Limited containing Gordon’s Compass of Vertical Labyrinth Management, a device with 49 uses that showed the quickest and safest path through a maze but did not work underground. Because the compass seemed designed for the tower, Everly refused help from other mantises and entered with ten mercenaries.

The compass guided Everly’s group safely through 49 levels of one-way door choices, building audience attention and giving Everly rare pride at being recognized. At the top, however, Everly found only a note on a pedestal. The system announced that the whole tower was an advertisement: a dead end sponsored by Dictum Waystation Controls, Limited, mocking Gordon Waystation Outfitters and warning not to get caught with nowhere to go.

The reveal humiliates and enrages Everly because Everly’s own sponsor used Everly as part of a lethal advertisement. A trap door opens and forces Everly’s group downward through new hazards while the previous path disappears. Ten floors later, only Everly, the dwarf, and the ogre remain alive, trapped under the crushing ceiling.

As the dwarf gives up and lies back in the sand, Everly realizes the true Inevitable Ruin may have begun much earlier, when Everly chose isolation over cooperation with other mantises. The ogre unexpectedly speaks, suggesting the end may not be inevitable, just before the ceiling crushes him. Everly reaches out to touch the ogre as the pain begins, and the chapter ends with a status entry identifying Everly as a primal sward mantis, explosives engineer, top level 62, author of the fifth edition of the Dungeon Anarchist’s Cookbook, and dead on the eighth floor.