黑暗骑士，守护哥谭的传奇梦。come what may

　　After witnessing the murder of his parents, a young billionaire makes a solemn vow to dress up like a bat and wage a one man war on crime! But when this solitary savior realizes that "one" is the loneliest number to wage a war with, he'll set off on a musical adventure to rescue the city from the greatest super-villain of all time and find a super friend.