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.
Back at the beach, Team Natsu mopes over their lost time before Erza scares everyone by declaring that she will start a training course from hell for their last remaining days. Before she can however, a messenger bird lands on her head, the note asking the group to come to the bridge in the West Woods.
Defensive but curious, the group head to the bridge and cross it to encounter three cloaked figures waiting for them. The trio pull back their hoods to reveal themselves as Jellal, Meredy and Ultear, much to the group's shock. After Jellal and Erza quickly discuss Jellal's jailbreak and the return of his memories six years prior, the three reveal that they have formed an independent guild by the name of Crime Sorcière, their goal being to destroy Dark Guilds and anything related to Zeref so that people will never fall to the dark side as they once did. When asked by Gray why they just don't become official, the trio answer that due to Jellal's status as a criminal and Meredy and Ultear's connection to Grimoire Heart, being accepted by the Council is impossible.
Moving along, the three then get down to business of why they summoned the group, explaining that every year they have felt a strange Magic presence at the Grand Magic Games, and, not being in a position to go near the stadium, would like Fairy Tail to investigate for them. In exchange, Ultear offers to increase their Magic abilities, explaining that she can use her improved Arc of Time to open their "Second Origin," a dormant Magic container generally not used by Mages that, if opened, can allow them access to heightened amounts of Magic Power. However, she also warns them that the process will be incredibly painful, but the Fairy Tail Mages are more than happy to receive the help and start celebrating. That is, all except Erza, who stares sternly at Jellal.
Ultear starts the process on Natsu, who writhes around in terrible pain as the others fearfully watch. Carla then realizes that Erza is gone, to which Happy states that she went somewhere with Jellal. At a nearby beach, Erza and Jellal sit and discuss the latter's returned memories, Jellal confirming that he remembers Nirvana and killing Simon, stating that Erza can seek revenge if she so chooses. Erza declines, asking if creating Crime Sorcière was part of Jellal's atonement. Jellal states that he's unsure, as he still feels lost, and upon then saying that he would probably be better off dead, Erza slaps him.
She yells at him for speaking such nonsense, citing that to live is true strength. When he still doubts, Erza goes to grab his collar in anger, but sends the two falling backwards over the bank instead. Landing atop one another, Jellal states that Erza is right, and Erza begins to cry, saying that she thought she'd never see him again. Remembering all of the events they have been through, the two lean in and almost kiss, but Jellal suddenly pulls away at the last second, stating he has a fiancée. The two apologize to each other awkwardly before Erza asks if the said fiancée is important to him. Jellal answers yes, to which Erza states that he must live for her sake.
Some time later, the rest of the team have taken Ultear's procedure and are all enduring it inside a small hut, save for Erza. Crime Sorcière heads off, stating they can't be in one place too long, but promising to keep in touch throughout the Games. The trio stop in a cave for the night, where Meredy asks Jellal why he lied to Erza about having a fiancée, Jellal referring to the rules of the guild as he replies that he can't love someone who walks in the light. However, Erza too has figured out the lie, but comments that for now, she and Jellal have their answer. Happy draws a broken heart in the sand for Erza and she kicks Happy to the moon.
A few days later in the capital of Fiore, Crocus, Team Natsu are still in pain from Ultear's spell, Erza scolding them for their embarrassing whining. Lucy wonders why Erza isn't in pain like them as well, with Gray suggesting that she probably already had her Second Origin to begin with.
Makarov, Bisca, Alzack, Asuka, Jet, Droy, Levy, and Harry soon find the group, with Makarov encouraging the Mages to do their best despite the snide comments they keep hearing from passing people about their weakness. Lucy recalls how only five members of the guild are selected to enter the tournament, being surprised that Makarov chose Erza, Gray, Natsu, Wendy and herself. When they ask why the master doesn't put in stronger members, he replies that none of the other Fairy Tail members have returned. The group then goes over some of the rules of the tournament, Levy reading the rule book and telling everyone the most important rules, which include the guild master not being able to participate, only members of the guild being able to participate, each event being a secret until the competition, and the rule that all members must be in their sleeping quarters by 12:00 AM.
Lucy, Natsu and Happy then run off to explore Crocus whilst Erza goes to their sleeping quarters, Honey Bone Lodge, and inspects the place for anything suspicious. Juvia meets up with Gray and asks him if he wants to go eat alone with her, but the two are interrupted by Lyon, who strikes a bet with Gray in which the winning guild gets to take Juvia as a member. Wendy and Carla visit the Fiore's King's Castle, Mercurius, and while they talk, a mysterious imp-like creature looks down on them from the balcony, smiling.
Natsu, Lucy and Happy notice a fight going on in the middle of a street and realize it's the Twin Dragons of Sabertooth, Sting and Rogue. The two Dragon Slayers recognize Natsu, while Frosch and Lector surprise Happy by being Exceed. Together, the Sabertooth members begin to berate Natsu, stating that they could have easily defeated Acnologia and bragging about their status as "Third Generation Dragon Slayers," Dragon Slayers who were both taught by Dragons and whom contain a Dragon Slayer Lacrima. When Natsu asks if their Dragons also disappeared in X777, Sting and Rogue reveal that they slaughtered their Dragon parents, deeply angering him.
When Team Natsu finally returns to Honey Bone Lodge, Erza scolds them for being late, however Natsu can only think about his encounter with Rogue and Sting and their threat to show him "true Dragon Slayer power" in the tournament. Erza then asks where Wendy and Carla are, and everyone begins to worry about Wendy and what she might be doing, stating that she is too young to be out so late. They consider going out to look for her, but remember the rule about having to be in their lodge by midnight. Before they can reach a decision on what to do, Elfman and Lisanna show up, having returned from their training in the mountains.