It's about how Bruce Wayne became batman
Batman Begins
Christian Bale.
Christian Bale
Christian Bale played Bruce Wayne/Batman in both Batman Begins and The Dark Knight
That would be Welsh actor Christian Bale.
It showed some of Bruce Wayne's preparation for becoming a crimefighter.
Bruce Wayne And Alfred
Bruce doesn't have a sister, but you are probably thinking of Katie Holmes as Rachel Dawes, his childhood friend.
In the movie "Batman Begins," there is foreshadowing of Bruce Wayne's fear of bats from his childhood trauma with them in the cave, hinting at his eventual transformation into Batman. Another example is Ra's al Ghul's warning about how Bruce will have to endure great tragedy, which foreshadows the challenges he will face as Batman.
Batman's Tragic flaw is his paranoia and his obsessiveness. Abilities that make the Batman what he is and what he is famous for ultimately is his downfall. Although in DCU we haven't seen Bruce's ultimate demise. We do get a sense of it in DCAU where Bruce's inability to let being the Batman go forces everyone he loved and love him away. The tragedy of Bruce Wayne and Batman is that ultimately Bruce's inability to be a human again. His tragic flaw and tragedy is his inability to rejoin the society which he was desperately trying to save. The movies (although are not THE definitional answer) did sum up his flaw easy. In the end of Batman Begins Rachel tells Bruce there will be a day when Gotham no longer needs Batman but will there be a day when you no longer need Batman. Ultimately the answer is no. When Bruce put on the mask he was no longer Bruce Wayne. He became the batman.
Bruce Wayne or dick grayson there are two batmans When Bruce Wayne went missing Dick Grayson took on the identity of Batman.