"The story centers on three inheritors of this ancient legacy: Bruce Wayne, Dick Grayson, and Tim Drake--each embodying and mastering individual cosmic energies in a battle to uphold justice across space and time. The iconic identities of the Bat-Family--Robin, Nightwing, and Batman--are not just names, but represent powerful, elemental forces from across the galaxy. These powers, known as "ways," have been passed down through generations of warriors. Many, many centuries from now, humanity has become a galactic civilization, with capital megacities on half a dozen planets, and smaller outposts on dozens more. But this expansion came at a cost. To conquer the vast distances between solar systems, humanity tapped into dark matter to bend space-time around ships. This completely transformed the fate of our species. But in order to access the power of dark matter, humanity inadvertently broke the barrier between our universe and our universe's shadow"-- Provided by publisher.