What happens when the land comes to life?

Somewhere on a salt-and-shingle island, inside a concrete-and-iron structure called The Green Chapel, a figure called The Armourer is leading a black mass. He plans to detonate a thermonuclear missile. But something is coming to stop him.

Five more-than-human figures - or forms, or forces - are traversing the landscape, moving steadily towards a point where they will converge and become Ness. Ness is the land awakened. Ness is lichen skin and willow-bones, condensing mist and tidal drift. Ness has hagstones for eyes and Ness speaks only in birds. And Ness has come to take this island back.