Superman calms her down and reveals that he was preparing her birthday present in the off-limits room: a liquefied form of his DNA that will grant her all his superpowers for 24 hours, as well as a leotard for her costume. Using the name "Superwoman", she joins Superman as he stops a monster attack in Metropolis involving Samson, Atlas and an Ultra-Sphinx. Superman drives Samson and Altas away and he and Lois spend an eventful day that ends with them kissing on the moon before her powers fade and she falls asleep. Superman flies her back home.