Synopsis for “The Return of Superman’s Lost Parents!”
One day while reading in his apartment, Clark Kent is alerted to some commotion outside of his home. Going outside he is astonished to see a time machine piloted by Ma and Pa Kent, who apparently have come from the future to visit their grown-up adopted son. Happy to see the Kents, who have been dead for years, Superman takes them to the Fortress of Solitude where he shows off his many devices, wonders and displays, including statues in tribute to his biological and adopted parents.
Returning to Metropolis and resuming his civilian guise, the Kents are visited by Lois Lane, however when Clark spots trouble he asks them to cover for him while he goes to the rescue as Superman. While Superman is gone, what he doesn’t know is that “Ma and Pa Kent” are really impostors, Cedric and Millicent Carson, who criminals who narrowed down who could have possibly been Superboy’s parents in Smallville and correctly deduced that Clark Kent was really Superman. Superman returns again, and after showing off his Superman robots, “Pa” then “remembers” that the scientist who gave them the time machine may be onto a cure for Kryptonite and asks Superman to find a sample. Still falling for the Carson’s ruse, Superman complies, and the “Kents” return to the past.
Suddenly, Superman realizes that he’s been tricked when he considers that matter cannot occupy the same space, and that it would be impossible for the Kents to have been from the past and be able to take Kryptonite with them because they previously told Clark that they could not bring anything back with them. Realizing it was all a hoax, Clark finds the faux time machine stashed behind his house. He soon gets a phone call from the Carson’s who blackmail Superman into collecting five million dollars worth of valuables. Superman complies and has to give in to their demands because they can not only black mail him but keep him at bay with the Kryptonite he willingly gave them.
Superman waits for the Carson’s to split up and then sends in robots based on them to go into the home and hypnotize them one by one and make them forget Superman’s true identity and collect the Kryptonite and the various objects of value he unearthed for them.