Struggling with horrifying, sleep paralysis-induced visions, young writer Anna (Kate French) retreats with her boyfriend to an isolated yet beautiful glass house in the desert. Hoping that the desert vistas surrounding her will spur her creativity, she welcomes the opportunity to stay behind when her boyfriend must return to the city for urgent business. However, Anna's sleep paralysis does not subside, despite the calming environment. And now, her attacks are accompanied by a mysterious figure, covered with dirt as if it was made of sand itself. As the visions intensify, she finds herself on the verge of losing her mind...or is she being led to uncover a life-threatening secret?