[HR-PUFF&STUFF]

you open the movie with it being set "One Year Ago" with Bruce going on his first failed mission undercover and him back at the mansion looking at his parents picture and the bat coming in and showing him what he must become. cut to opening sequence and brings us to the present time with him as batman. that way we can get to the story and not have to be shown where everything came from, he got it over that one year.