Somewhere on a salt-and-shingle island, inside a ruined concrete structure known as The Green Chapel, a figure called The Armourer is leading a ritual with terrible intent. But something is coming to stop him. Five more-than-human forms are traversing land, sea and time towards The Green Chapel, moving to the point where they will converge and become Ness. Ness has lichen skin and willow-bones. Ness is made of tidal drift, green moss and deep time. Ness has hagstones for eyes and speaks only in birds. And Ness has come to take this island back.