Recap of the events of Crisis on Infinite Earths and explains how this issue's story fits in.
An untold story of Crisis on Infinite Earths.
It is stated in this issue that this story takes place during and after the events in Crisis on Infinite Earths #4. In the collected edition Crisis on Infinite Earths Companion Deluxe Edition #2, it is stated definitively that this story takes place between Crisis #4 and #5.
First appearance of Earth-D and its Justice Alliance.