Using a deep space teleporter and portable oxygen unit, Superman travelled to the far reaches of the galaxy in an effort to find a world where he could be alone, unable to harm anyone again. But he was pursued by nightmares of the three Kryptonian villains he had executed in the Pocket Universe.

Superman's travels took him to many exotic worlds. He faced a number of challenges, including more than a few close shaves, in his efforts to find complete isolation. Eventually he found himself prisoner aboard a starship headed for a planet known as Warworld, ruled over by the alien menace known as Mongul.

News that the last surviving Kryptonian caused quite a stir on Warworld, a planet where extensive gladitorial combats were staged for the amusement of the populace. It was expected that the Kryptonian would prove quite a champion indeed. However, Superman's personal vow to never take another life frustrated the people watching his combats. Angered, Mongul sent his champion, Draaga, with orders to kill the Kryptonian.

The battle with Draaga was fierce, but Superman was able to finally triumph. In defiance of Mongul's edict, the Last Son of Krypton refused to administer the killing blow. Mongul was not pleased. He teleported himself to the arena, intent on killing the last Kryptonian.

The battle was fierce. Superman seemed on the verge of losing when he received some unexpected aid. Find out from where.