Keith Williams joins John Byrne on Action 591 (Aug. 87), the third part of a four-part story that clarifies the relationship between the Superboy from Legion of Super-Heroes, and Superman.
The story picks up from the previous issue of Superman, as Superboy freezes Blok, Brainiac 5, Invisible Kid and Sun Boy, taking them to the Time Trapper, but leaving Superman free.
We have the story of Superboy and the Legion explained a different way, by the Time Trapper. The Trapper took a small slice of the newly-formed universe, and molded it to his own liking. When the Legion believed they were travelling back in time to meet Superboy, they were really travelling into the Time Trapper’s pocket universe, and meeting the Superboy he had created.
Superman winds up in the pocket universe, and is discovered by Pete Ross. He thinks this is Superboy under the influence of red kryptonite, and brings him back to the Kent home, where Superman meets two people who are the Kents, but not his parents.
Superboy shows up, and a fight breaks out, with Krypto getting into the fray. Superman notes how much more powerful Superboy is, with the plus of an invulnerable cape.
Krypto sacrifices his powers and intelligence to retrieve some gold kryptonite, in a failed attempt to save his master from the evil Superman.
Pa Kent tries every kryptonite there is against Superman, but they are powerless on his physiology, being from a different universe. Superboy admits that he wanted Superman to beat him, hoping that together they could defeat the Time Trapper.
But in the end, the Legionnaires convince Superman not to come along with them for their final battle with the Time Trapper.
This sets the new relationship between Superman and the Legion, which will exist, with some minor modifications, until Zero Hour.