Eighteen–year-old Janie Hannagan needs a break from the pressure of her newfound celebrity status as the girl who helped break up a sex ring at her high school. Her boyfriend, Cabel, whisks her away to a lakeside cabin his brother and sister-in-law have rented so she can find peace. Although the vacation takes her away from the prying eyes of the town, she can’t escape the effects of being a dream catcher — a person who slips into other people’s dreams. She’s learned how to manipulate the outcome of some dreams and pull herself out of others, but she can’t fight the toll this ability takes on her body. Miss Stubin, a deceased dream catcher, left a notebook explaining that Janie will eventually be blinded and crippled because she goes in and out of other people’s dreams. The knowledge plagues not only Janie’s thoughts, but also Cabel’s dreams.
Two days after arriving at the cabin, Janie checks her cell phone and finds several messages from her best friend, Carrie. They are frantic and somewhat incoherent — something about Janie’s mom wandering around the front yard, drunk, looking for Janie. Another says that Carrie took Janie’s mom to the hospital. Janie can’t reach Carrie, so Cabel immediately takes Janie home.
They find Carrie in the ICU waiting room. It turns out that Janie’s mother is fine, but the father Janie never knew, is dying. Although conscious when he first came to the hospital, Henry Feingold is now comatose and unresponsive. When Janie finally goes into his room, she is assaulted by his dream. It is loud and filled with static. Colors fly around her. With great effort, she pulls herself from the dream and allows Cabel to comfort her until her body can function again.
During the following week, Janie struggles with all the changes and decisions she must make. Besides dealing with her dying father and alcoholic mother, she must decide if she’s going to try and live as normal a life as possible until her body is crippled or separate herself from everyone, including Cabel, so she no longer slips into peoples’ dreams.
Curious about her newfound father, Janie finds Henry’s house and searches for clues about his identity. Henry kept himself isolated. Despite having attended college, he didn’t work outside the home but made a living buying and selling things on the Internet. His only friend was the UPS driver who delivered and picked up his packages. He also has notes around the house and on his computer about “Morton’s Fork,” a term which denotes a dilemma in which there is no good outcome. Janie visits her father several more times at the hospital and slips back into his dream, although it takes a great physical and mental toll on her. She eventually discovers he is also a dream catcher. He is in great pain, even in his dreams, and it is only when Miss Stubin is called back from death to help that Henry is able to converse with Janie. For the most part, all he can do is scream for help and beg Janie to kill him. He eventually explains how he fell in love with Janie’s mother but chose to leave her when the agony of slipping into her dreams and trying to keep it secret became too much.
Finally, one night, Henry enters one of Janie’s dreams and aids her in changing the outcome. After that, his physical body seems more at peace. In one last dream, Janie finds a goodbye note from Miss Stubin in which she says Henry wants her to consider “Morton’s Fork.” The following day her father dies.
Janie wrestles with what she believes “Morton’s Fork” means. She thinks the choice is whether to continue to live in society but become a blind cripple in her 20s or isolate herself as her father did. Henry lived to his late 30s and never lost his sight or the use of his hands. Although it pains her to think of living without Cabel, Janie decides to move into Henry’s home, take over his Internet store and live in isolation.
The first night in his home she has a dream about her father and realizes that her decision to live alone will not be without pain. She figures out that if she doesn’t use her ability, she will wind up like her father did — living a life of migraines where his brain eventually malfunctioned and killed him. She gathers her belongings and heads back home. She calls her boss, Captain Komisky, and tells her she wants to remain on the police force. Janie also confesses the truth of her situation to Cabel. They agree to take their relationship one day at a time. That evening, Janie attends her first Al-anon meeting and finds comfort in knowing there are others like her, people trying to live with an alcoholic without letting it destroy their futures. When she gets home, Janie decides there’s one thing she can do for her mother. She opens the door to her mother’s room and slips into her mother’s reoccurring dream of Henry, hoping this time to help her mother cope with her loss and move on with her life.