Eve is alone in orbit around a distant planet, nicknamed "Zilly," which is home to an alien strain of plant life. Her existence is a solitary one, despite the comforts afforded by the design of the ship, which includes an interactive A.I. meant for recreation. When the A.I. begins to make unexpected decisions on its own, threatening the delicate balance between life and death that exists on the planet’s surface, Eve finds herself making discoveries both exciting and terrifying while her own memories of Earth blend with her reality.