The United Planets–a beautiful idea–an opportunity for large-scale galactic peace!
But an old enemy is about to return to force Superman to fight with everything he has in order to protect it! It’s Man of Steel versus Mongul in this epic fight to save the United Planets and the peace it will ensure, and Superman is determined to win.
But if Superman fails, it means the fall of the United Planets.
Collects Superman #20-24.
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