"Fear of Rain" follows Rain Burroughs (Madison Iseman), a teenager diagnosed with schizophrenia who constantly has to struggle with whether or not what she’s seeing and hearing is reality or a symptom of her mental illness. However, when she begins to see disturbing images from the house next store, she becomes convinced that the hallucinations have some connection to reality, and that the house holds some terrible secret. Her parents (Katherine Heigl and Harry Connick Jr.) try to assure her that what she's seeing is all in her mind, so she turns to a charming new classmate named Caleb (Israel Broussard) for help. But Caleb himself might not be real either.