This was a reboot of World’s Finest (Volume 1) with a change in the placement of the apostrophe!
Originally, this comic featured the adventures of Earth 2 characters Power Girl and Huntress while stranded on Prime Earth/Earth Zero. Starting with issue 27 however, the focus changed to telling untold stories of the history of Earth 2.
Diana only appears in Chapter Three of this issue.
After her bad night, Kara visited her friend Helena in her room, and learned that Batman had found a way to record the whole thing happening. Ken had died, and Kara blamed herself. She couldn’t speak to Kal about it, because he would be angry that she went out on her own.
While Helena sympathized, she focused instead on the fact that Kara had caught a brief glimpse of a likely suspect, and she thought it might have been another super-human. Searching through her father’s surveillance footage, Helena discovered a blurry frame of a woman’s form in the wreckage. Together, they returned in their heroic alter egos to the scene, searching for clues.
Meanwhile, Batman was perplexed to discover that his daughter had hacked into his surveillance system. Superman appeared at his window, warning that their girls were getting out of control. This was worrisome, given that they expected an incursion from Apokolips soon.
Kara used her enhanced vision to determine that the energy signature of the culprit was of Apokoliptian origin – which meant they were out of their leagues. Unfortunately, they were too late to call for help, as they were attacked by Fury. Angrily, Kara fought back harshly, wanting revenge for Ken’s murder. When Helena became trapped under debris, Kara was forced to let Fury go to help her. Watching from the Batcave, Batman and Superman worried that this woman might complicate matters, given the coming war.
Trying to trace the woman’s energy signature, Kara and Helena found too many energy signatures to tell where she would be. Following her father’s training, Helena suggested they start moving outward from the crime scene, and investigated at the location giving readings just north of them. They discovered a cave there, and before Helena could stop her, Kara sped inside, only to be knocked out again by Fury of two worlds. Before she could respond with more violence, Kara was stopped in her tracks by Wonder Woman, who warned her to go home. Kara refused, forcing a battle that allowed Fury the chance to escape to Apokolips.
When Robin returned with news of the escape, Wonder Woman was sad, explaining that they would all be killers one day, and the one that had just got away was her daughter.