Here’s the Publishers’ Weekly summary:

“It’s only natural that Alan, the broadminded hero of Doctorow’s fresh, unconventional SF novel, is willing to help everybody he meets. After all, he’s the product of a mixed marriage (his father is a mountain and his mother is a washing machine), so he knows how much being an outcast can hurt. Alan tries desperately to behave like a human being’or at least like his idealized version of one. He joins a cyber-anarchist’s plot to spread a free wireless Internet through Toronto at the same time he agrees to protect his youngest brothers (members of a set of Russian nesting dolls) from their dead brother who’s now resurrected and bent on revenge.”