Arthur Louis Pullman the third’s future is crumbling when he discovers a journal written by his famous grandfather, an iconic Salinger-sequel author who died in Ohio a week after he disappeared from his family’s California home. What happened in that week and how much his actions where influenced by his Alzheimer’s remains a mystery. Following the journal’s clues, Arther embarks in a cross country train ride to chase the shadows of his grandfather, but his journey is complicated by a girl with secrets of her own. Escalating run ins with his grandfather’s rabid fan base makes it clear that Arthur’s not the only one trying to piece together Arthur’s last week, and some people will stop at nothing to find the truth.