JLA. El clavo (DC Compact comics)

A nail, the most insignificant of objects, prevented Ma and Pa Kent from finding a baby from another galaxy. As a result, the world has never known Superman. Instead, the members of the Justice League stand as Earth's most powerful protectors, but since the group's founding, one hero has stood out above the rest as their inspiration, their guide, and their moral compass. Writer and artist Alan Davis creates a different world, where power and ethics will be put to the test. And all because of something as simple as a nail.