This is a documentary on one extraordinary (even by savant standards) person: Daniel Tammet. Daniel exhibits, aside from the amazing intellectual capabilites associated with savantism, self-awareness of his mental processes and is a relatively high-functioning autist. This is a huge thing, since most savants cannot function or even survive in a society without plenty of support from others. Thus, Daniel receives the immense abilities of a savant, while missing many of the stereotypical drawbacks.