When Paul Keppel learns that his fanatical, fire-and-brimstone-preaching grandfather is dying from brain cancer, he sees his own chronic headaches as a sign from above that he too has a very short time to live. Driven by pain, a nightmare about work boots, and a sense of impending doom, Paul soon finds himself losing control over his words and actions, to disastrous and comical effect. In order to save his marriage, avenge his sister, and preserve his sanity, he must face the memory of the summer when he was twenty-one, when a tragic steel plant accident sent his life spinning off course. But in the process, Paul begins to suspect that the history he has written in his head may not be as accurate as he once believed.