Kim Peek can read two pages of a book at once, his left eye tracking one page and his right eye the other, absorbing each in about eight seconds and rarely forgetting a word of it. He has memorized roughly 12,000 books, including the entire Bible, and can name the day of the week for any date a stranger gives him along with what ran on that day's front pages. The film traces how screenwriter Barry Morrow met Peek in the early 1980s and turned him into the basis for Dustin Hoffman's Oscar-winning role in Rain Man, and how Hoffman's own meetings with Peek helped draw the deeply introverted man out of his shell and eventually onto public stages. Peek's father, Fran, describes raising a son who could rattle off history, geography, and music trivia at a genius level yet struggled to dress himself or comb his hair. NASA researchers scanning his brain in 2004 for space-travel research appear as well. Peek died of a heart attack at 58 in Salt Lake City.