The film follows 17-year-old Katie Price (Bella Thorne), sheltered since childhood with a life-threatening sensitivity to sunlight. Katie’s world opens up after dark when she ventures out to play her guitar for travelers. One night, she meets Charlie (Patrick Schwarzenegger) whom she has secretly admired for years. She hides her condition from him, and the two embark on a uniquely powerful romance. Rob Riggle plays Katie’s loving and compassionate father, Jack, who endeavors to give his daughter a good life.