The story opens with the death of the protagonist’s beloved mother, with whom she lives. Ines, a dictionary researcher, is soon jolted from her grief by the excruciating pain of a “twisted and gangrenous gut” (112). After a hospital stay and emergency surgery, she returns home to recuperate from the physical trauma and revisit her mourning. On the day when she can remove the wound dressings, Ines discovers a surprising change in her body: it seems to be turning to stone. Her incision has become a “raised shape, like a starfish, like the whirling arms of a nebula in the heavens” that gradually spreads to the rest of her body, forming "ruddy veins" across her belly and "greenish-white crystals sprouting in her armpits" (119).

Ines assumes that this process is fatal and that she will "observe [death's] approach in a new fantastic form" (121). Deciding to write a record for those who will find her after her demise, she studies the names and nature of minerals in order to understand and describe her metamorphosis. From her new, mineralizing perspective, she realizes that stones can be dynamic and living as well as fixed and dead; minerals are memorials to the relationships and reciprocities between living creatures and dead ones.

Unable to write the record of her transformation, Ines finds herself passionate to be outdoors. She explores the city, looking for "a place to stand in the weather before she became immobile" (127). In an old graveyard, she meets and gradually forms a bond with Thorsteinn, an old Icelandic stonecutter who may also be mourning the death (apparently of a child). The Ines shares the secret of her metamorphosis with the stonecutter and eventually travels with him to his homeland, a geologically young country, where stones are alive and myths tell of “striding stone women.” Thorsteinn sketches here in this landscape and creates a standing stone image of Ines that reflects his ability to see her as she is and find her beautiful: "Petra faction saw that she existed, in there" (150).

Ines's metamorphosis culminates in her inability to see or speak as a human and her ability to perceive a whole new realm of living creatures, "earth bubbles and earth monsters" (151) and other stone people who are "flinging their great arms wide in invitation" (156). She joins their wild dance.