Superman rams a giant asteroid on a collision course with Earth. The impact causes the asteroid to now orbit the planet. However, Superman is staggered as he returns to Earth. He manages to change back to Clark Kent (apparently a reflex action) but doesn't remember who he is. Meanwhile, the orbiting asteroid still presents hazards for Earth. Only Superman can place an explosive device that will demolish the asteroid -- and no one, including Clark, knows where Superman is.
Did You Know?
As the amnesiac Clark lies in his bed, Jimmy, Lois and Perry visit him. He isn't wearing his Clark Kent glasses, but though each of them has met Superman many times, no one recognizes him with his glasses off. See more
That's exactly what I meant before. It zoomed right past Venus and Mars didn't it? Just because a big thing runs wild and gallops all over the solar system doesn't mean it's going to hit us.
I know Jimmy, I know.
Still it does seem funny we can't see it anymore.