This was a weekly year-long event, similar to “52” and “Countdown” but unlike the latter, it was an entirely self-contained story. Unlike either of its predecessors, however, it focused on the major super-heroes of the DC Universe, Superman, Batman, and Wonder Woman, instead of the lesser developed characters.
Each issue of Trinity had two stories; the main one, focusing on the Trinity themselves, and the backup, focusing on other characters involved in the overall storyline.
From Castle Branek, Morgaine le Fey has set unspecified plans into motion involving Los Angeles and the young woman she saw in her vision. Enigma, who’d had his plans against Wonder Woman, Superman, and Batman designed before coming to meet le Fey, has put likewise put those into motion.
In Metropolis, Superman scrambles to save citizens from a solar system which has suddenly appeared above the city and who’s planets are growing in size and destroying buildings. Before the gravity from it’s sun can begin to have a devastating effect, he flies into it–noticing it’s not charging him as a sun from this universe should–and moves it into space, pulling the planets with it.
Wonder Woman, meanwhile, finds herself tangling with three giant robots in Washington D.C.. She takes out the first one easily, taking just eight seconds. Superman flies in to give her a hand fresh from throwing the planets into space, but she backs him off and destroys the two remaining with one move. He questions why it matters who took them out, and she explains to him that Amazons are in constant competition with themselves and since no innocents were in danger, she indulged herself.
At the same time, Batman–moments ago in his Batplane–finds himself atop a building in a strange version of Gotham City. As local authority close in on him he notes that it all feels “insubstantial”, as if “a single word” could destroy it. Looking up, he says “no”, and with the sound of “shattering crystal” in his ears he finds himself in the real Gotham and lets Alfred Pennyworth know he’s on his way to the Batcave.
Having watched all of this, le Fey and Enigma are impressed by the way the Trinity were able to deal with and handle reality warping around them, though le Fey is less impressed by Batman than the other two. They argue over just how impressive Batman really is, with le Fey relenting that if he’s to be important, she won’t argue with that.
Over the communicator, Wonder Woman and Superman fill Batman in on the robots–which have vanished–and the pocket solar system. Wonder Woman mentions their dreams, saying she felt the voice from them, and as Batman invites them to the Batcave to go over things in more depth they receive a “Justice League alert” reporting JLA member John Stewart. The visual transmitted is of a large purple creature–with a smaller yellow one at it’s side–that appears to have smashed through one of Stewart’s energy constructs.