Prospero, an alien child who arrived at ps238 with apparent (yet uncommunicable) warnings of doom, has been doing his best to monitor incoming extraterrestrial objects. One such craft, a probe, visited excelsior Public School's grounds and managed to capture Tyler and Captain Clarinet before it was destroyed. It sent a mysterious transmission as it was turned to scrap: a digital description of someone's DNA.
Other odd, yet related, occurences have taken place. Zodon, while traveling through time, found himself in a place that vaguely resembled the interior of the probe. His malfunctioning time machine (with him still in it) was used to dispose of an alien creature by sending it into the near past. Thankfully, Cecil Holmes, armed with a shrink ray, made short work of the creature.
Much to Cecil's delight, it was an unheard-of species, and the director of the Bureau of Alien Monitoring (also known as "The Revenant", a vigilante superhero) promised Cecil he could name the race of tentacled beings.
But all this seemed to point to an upcoming invasion. Still unanswered was why they needed a human DNA sample for their plans, and what they intended to do with it. Prospero's makeshift technology has picked up something big approaching Earth, and it's already been met by our world's metahuman protectors...
(Copied from inside the front cover)