It begins, as the best superhero stories do, with a tragic accident that has unexpected consequences. The squirrel never saw the vacuum cleaner coming, but self-described cynic Flora Belle Buckman, who has read every issue of the comic book Terrible Things Can Happen to You!, is the just the right person to step in and save him. What neither can predict is that Ulysses (the squirrel) has been born anew, with powers of strength, flight, and misspelled poetry-and that Flora will be changed too.