Din, traveling under the name Signum Kol, arrives deeper inside the hidden citadel after the ship is washed with harsh reagents and processed under heavy security. Militis Torgay meets Ghrelin and Din, then escorts them through the citadel’s organic, tunnel-like interior, where masked workers move frantically through a secret operation. Torgay assumes Din has been briefed, which reinforces that everyone here treats the shipment as a matter of extreme secrecy.

Torgay and Ghrelin lead Din into a series of cargo chambers filled with reagent crates. Apoths inspect each crate with caged plants to detect sabotage, because the materials will travel with the marrow sample. When Din asks what the reagents are for, Ghrelin explains that they include nutrients, stimulants for the ossuary moss that binds the marrow, and emergency materials in case the excised sample becomes unstable.

As they continue through multiple identical chambers, Ghrelin describes the scale of the transport plan. The marrow will be carried in a huge imperial hydricyst, altered into a floating manufactuary so the sample can be constantly sustained on its voyage to Qapqa and then transferred onto river barges along the Asigis. Din learns that the project has consumed enormous labor, resources, and lives, and Ghrelin frames those losses as sacrifices made in pursuit of a safer future.

Ghrelin then takes Din to a reinforced chamber where the marrow is being contained. Looking through a hatch, Din first sees swirling kyap-tree petals, which serve as an early warning system for containment failure. Beyond them, Din finally sees the marrow itself: a large, misshapen growth suspended in a specially engineered metallic ossuary moss cradle, occasionally trembling as if it is trying to change or wake.

Ghrelin explains that this custom moss was designed to resist the marrow’s mutating effects, yet even so the sample remains dangerously unstable. He speaks of the marrow as a world-changing prize, one some already call the seed of a Fifth Empire, and reveals the human cost more plainly: thirty-two augurs died to secure it. Ghrelin ends by reminding Din that Pyktis was once counted among the dead, but is now known to be alive and intent on turning this hoped-for deliverance into a weapon, raising the stakes for whatever comes next.