Even as a kid I used to wonder why Star Fleet relied so heavily on transporter technology, because they screw up so often. It seemed you were almost as likely to be split into good and evil duplicates of yourself or end up in a parallel universe as to actually arrive at your destination.
Meanwhile, over in the DC Universe, the Legion of Super-Heroes used an equally unsafe technology, Time Bubbles, to travel through time.
Even casual readers of Legion have been exposed to the inevitable Time Bubble crash lands in some terrible time period or alternate timeline.
So in one sense, on a long enough timeline, it was inevitable that the Legion of Super-Heroes and the crew of the original Enterprise lead by Captain James T. Kirk would meet up in some weird evil universe because of their reliance on these obviously unsafe technologies.
Due to the kind of crazy science that transporters and time bubbles rely on, Kirk, Spock, McCoy, Uhura, Chekov and Sulu all end up in an alternate universe at the same time as Lightning Lad, Braniac 5, Saturn Girl, Chameleon Boy, Shadow Lass and Cosmic Boy.
We see a fleet of starships, blockier, less elegant (more Bauhaus?) but still similar enough to those of the Federation to be familiar to us. Klingon ships are there as well. The fleets are teamed up to destroy a planet of shapeshifters. The massacre is being lead by Captain Tomorrow, better known to comic fans as Tommy Tomorrow, of the Planeteers.
The comic is heavily plot driven, and so far neither group of characters has been given much to do except to react to their circumstances. In fact, by the end of the comic, the groups haven’t even met. One great bit towards the end of the book has Spock and Brainiac 5, working independently, simultaneously come to the conclusion that they are in the wrong universe.
Star Trek/Legion of Superheroes #1, published by IDW Publishing is written by Chris Roberson with art by Jeffrey Moy and covers by Phil Jimenez and Keith Giffen is in stores tomorrow.