"Justice Society of America Kingdom Come Special Superman" ties in from Justice Society of America (Vol 3) #20 and continues in JSA Kingdom Come Special: Magog #1.
Also contains "My Kingdom Come", a bonus section featuring Alex Ross' notes, concept sketches, color reference photos, finished pencils and a Cover Gallery for the upcoming Kingdom Comes tie-ins.
*Spinning out of the "One World, Under Gog" storyline, the Kingdom Come Superman's struggle with his place in the world brings a final conflict between the Supermen of Earths 1 and 22! Feeling the weight of his own world's loss on his shoulders, the transplanted Superman searches for answers to the mystery of his life's seemingly cursed existence and encounters "old acquaintances" on the way.
*Source: DC Comics.com