Three years ago, a meteor landed on a coastline in the United States. Ever since that day, a strange disturbance known as the Shimmer appeared. In response, many expeditions have been carried out by the army, though only one person has ever returned from them: a man named Kane. Upon returning, he reunites with his wife, Lena, but is unusually evasive when asked what happened during his expedition. Shortly thereafter, his health begins to deteriorate and is quickly hospitalized. With Kane in intensive care, Lena is approached by Dr. Ventress. She is prepared to go on a new expedition into the Shimmer. Determined to learn what happened to Kane, Lena volunteers to join her.