Troubled tells the story of Freddy and Fanny Salmon, a brother and sister both with mental disabilities. Freddy suffers an extreme case of OCD as well as other issues in which Fanny looks after him. But she has a dark side, a temper that is growing out of control, and her caring for Freddy turns into an obsessive incest relationship in which Freddy is stuck in. Will he be able to escape his deranged sister with help from his friends? Enter the world of mental illness at is most controversial side.