Teenager Owen is just trying to make it through life in the suburbs when his classmate Maddy introduces him to a mysterious late-night TV show — a vision of a supernatural world beneath their own. In the pale glow of the television, Owen’s view of reality begins to crack.
In rural Western Massachusetts, 11-year-old Lacy spends the summer of 1991 at home, enthralled by her own imagination and the attention of her mother, Janet. As the months pass, three visitors enter their orbit, all captivated by Janet.