I don't own Justice League or Fairy Tail just any OCs I may throw in and unlike in the prequel so far nothing from the Harry Potter series will be there just mentioned. Justice League shouldn't play any part after Mass Extinction arrives on Earthland.
Just to see Jellal well and alive, a crying Wendy having healed him. Natsu rushes against him, but Jellal rapidly takes him out with a spell, unexpectedly doing the same with Brain, and then leaving. The group leaves the place to go and heal Erza, with Carla carrying an unconscious Wendy, and Brain, thinking that Jellal wants to keep Nirvana all for himself, orders Cobra, from a far place, to follow him. The confrontation between Gray and Racer continues, and, as Carla and Happy carry Natsu and Wendy away, they are spotted by Racer, who rushes towards them and had knocked them out the air. Natsu catches all of his unconscious friends and runs. Just as Racer is about to catch up to them, Gray prevents him from continuing the chase with Ice-Make: Rampart. Natsu makes a run for it, and Gray continues his battle. Elsewhere, Jellal is shown having knocked a Erigor member unconscious and robbed him of his clothes and, as he leaves wearing said clothes, he whispers Erza's name to himself.
As Natsu runs away carrying his unconscious friends, he is contacted by Hibiki through the use of his Archive, with which he sends Natsu a map to find them. He then explains the mechanics of his Magic to Lucy, who, glad to know Wendy's safe, swears she'll protect Erza until the little healer arrives. Meanwhile, Racer renounces to chase after Natsu, stating that he wants to kill Gray, who stopped him in his tracks twice. After displaying his astonishing speed, he uses Dead Grand Prix to summon forth many armed motorbikes, on which he and Gray start a chase, exchanging blows. The two run across Lyon and Sherry, and the former joins the fight on Gray's motorbike, destroying Racer's with Ice-Make: Eagle. Racer responds by destroying their motorbike and, then start dodging all of their Ice-Make spells, expressing surprise when the two remove their shirts, true to their strange habit. Avoided all of their attacks, he hits them, and states he'll finish them off. However, Lyon tells Gray he has found Racer's weakness.
Gray and Lyon confab a bit, and then Gray is suddenly and unexpectedly blocked in a very high pillar of ice by Lyon, who states he doesn't need him, and that the glory this time belongs to Lamia Scale. He and Sherry then ready to fight Racer, but Sherry is rapidly taken out by Racer. Before he can be struck too, Lyon uses Ice-Make: Hedgehog to cover himself in ice spikes, stating that Racer won't be able to hit him, and claiming that his fatal weakness is his low offensive capability while trying to lead him away. However, Racer breaks through Lyon's ice and rapidly hits him several times.
He then draws a knife and points it at Lyon's throat, stating that, with his speed, all that he needs to finish opponents off his that knife, with which he can cut their throat open. He adds that, despite his young overconfidence being okay, Racer is an Oración Seis, the wrong opponent to pick a fight. However, Lyon's reveals to have truly find Racer's weakness: his Magic doesn't enhance his movement speed tremendously, but instead slows down the perception of time for everyone in a given area aside from himself, making it seem like he moves at unholy speeds.
Racer's Slowing Magic, however, affects only a certain area, and this allows the ones outside of it to see him moving normally. In that moment, Gray is shown breaking free of the ice pillar with a bow in his hands, capable of seeing Racer clearly from such distance. As Racer realizes that everything was part of the two's plan, Gray shoots his arrow. Remembering his pray to be faster than anyone, Racer is defeated by the ice attack.
Gray, Lyon and Sherry gather, commenting on the victory, Racer, however, unwilling to accept his defeat, raises on his legs and reveals an explosive Lacrima device strapped to his chest, charging forth to take Gray's life alongside his own. However, Lyon pushes Gray aside and tackles Racer, with the two of them falling off the cliff while the Lacrima explodes, seemingly taking the lives of them both, much to Gray's and Sherry's dismay. Natsu hears the explosion, and so does Brain, incredulous that the Allied Forces managed to take the life of an Oración Seis. Angered, he wakes Midnight up and orders him to eliminate all of their opponents. Midnight states he will.
Gray, alarmed, forms ice stairs to go examine the site of the explosion and search for Lyon, whom he's sure can't be dead. Meanwhile, Sherry starts to act strangely, wondering who is to blame for her beloved one's apparent death.
Jura is shown fighting Hoteye, who assaults him by surprise, their Earth Magic, respectively making the ground hard and making it soft, clashing as Hoteye wonders which one is stronger. Jura replies that the one that has stronger conviction will always prevail no matter the quality of Magic, with Hoteye answering that the ones always on top are the rich. Meanwhile, Natsu reached Lucy and Hibiki, and, having been awakened from her state of unconsciousness alongside Happy, Carla, and Mass Extinction while Wendy goes on to heal Erza from the poison, at the same time wondering whether Jellal really did Erza the terrible things they told her.
Meanwhile, Jellal is shown walking in a strange place, with Cobra following him without him realizing. The Oración Seis' member wonders why he can't hear his thoughts. Jellal is then shown having stopped before a large tree, with chains protruding from it. Much to Cobra's enthusiasm, Jellal destroys the tree, and a pillar of light is released from it. Elsewhere, Wendy finishes healing Erza, much to her comrades' happiness. However, such joy is interrupted by the sudden appearance of the light column from the ground, not too far from them: back to where Jellal is, Cobra rejoices, as from the beam of light, which is seemingly starting to gather darkness from the surrounding area, a tower peeps out: Nirvana. Everyone in the vicinity, both Team Light and Oración Seis, realizes that, and Midnight is seen congratulating an incredulous Brain, stating that now he'll kill all of their enemies before Midnight falls. Realizing that Jellal must be where Nirvana is, Natsu rushes in that direction, willing to stop him so that Erza doesn't have to meet him again, but the girl concerned seems to overhear, slowly opening her eyes while Mass Extinction uses her Velociraptor Soul to go with Natsu.
Everyone is shocked to see Nirvana appear, with the powerful Magic making communication via Archive between Hibiki, Eve and Ren difficult. While Gray searches for Lyon, Sherry stays still, silently blaming him for Lyon's supposed death, as her expression turns more and more evil. As Hoteye, having witnessed Nirvana and laughed happily, rejoicing in it, starts acting strange and screaming desperately as if he were in pain, Jura stares alarmed at him. Hibiki tells Lucy they should go after Natsu, but the group notices Erza has disappeared. Wendy starts crying, stating that the whole matter is her fault, for she was the one healing Jellal, and Hibiki unexpectedly attacks her with a spell, much to the others' dismay. Elsewhere, Natsu rapidly gets rid of Racer' personal Guild, Harpuia, which was blocking his path, stating that he won't let Jellal get near Erza. Lucy's group is then shown running in the same direction as Natsu, with Hibiki, carrying an unconscious Wendy on his shoulders, claiming that he had to do that. He tells the others that he knows what Nirvana is, but didn't tell everyone back at the meeting since it might have brought doubt about his loyalties. Nirvana is a spell that makes people switch between light and dark, and what they just saw is the first stage that makes people who waver between good and bad switch places, which is why he knocked out Wendy when she was having doubts.