Synopsis: An old hermit in a toga bursts into the Daily Planet ranting about how he is the Modern Nostradamus and has tomorrow's headline. He tells them that a meteor will hit the planet tomorrow, and Perry runs the story. The next day, Clark reminds Lois that Nostradamus's predictions were vague enough to mean anything. Suddenly, a meteor appears in the sky, headed toward the Daily Planet. Clark changes into Superman and flies up to redirect it to the ocean. Perry tells Lois and Clark to find Nostradamus and get his next prediction. Clark still insists that the meteor was just a coincidence. Nostradamus prediects that night will turn into day on the following evening. The next night, huge fires light up the sky in Metropolis. One of Luthor's men sees Superman appear after Clark sneaks away from Lois and runs back to Luthor to tell him what he's discovered. Luthor is responsible for Nostradamus's "predictions." He fired a meteor into the air with a rocket gun and created the fire by detonating a giant phosphorous bomb. He tricked the "Modern Nostradamus" by leaving a scroll of prophecies outside his cave. The next prophecy is an earthquake. Luthor plans to loot Metropolis after all its citizens evacuate due to the coming earthquake.
When Modern Nostradamus comes to the planet to make his prophecy, Superman corrects him. He explains to Lois that the fire was caused by a phosphorous bomb and that the scroll is a fake. Superman flies above the city and sees Luthor and his men in a car making its way into Metropolis. With his super-hearing, he overhears their plan, confirming his suspicions. Since the people of Metropolis are gone, Superman flies into the Earth and moves the plates beneath the city, causing an actual earthquake. This causes Luthor to wreck their car and Superman captures them. Using his super voice, he broadcasts a message to the people of Metropolis to tell them it's safe to come home.
Luthor tells Superman that he knows his secret identity. Superman takes Luthor to the Daily Planet to prove that he's really not Clark Kent. He goes inside to change into Clark Kent. When he comes out, he uses his super speed to appear as if Clark and Superman are both visible at the same time. After Luthor's arrest, Superman tells Modern Nostradamus that he can work at the Daily Planet forecasting the weather. The issue ends with Luthor's henchman in jail, still insisting that Superman is Clark Kent.