The Magic Council discusses the increasing number of Dark Guilds and contemplates ways to eradicate this problem. The conversation soon turns to Fairy Tail. Siegrain is thankful that Fairy Tail was able to take care of the Eisenwald incident, going as far as saying that if anything would have happened to the Guild Masters, it would have cost the Council's heads.
This obviously irritates some members of the Council, who direct the conversation into Fairy Tail's destructive nature. They come to a decision to make them pay.
At Magnolia Town, Lucy is writing a letter to her mother. She reminisces about the Eisenwald incident and expresses her delight for being part of Fairy Tail's strongest team. When she finishes writing, a half-naked Gray appears behind her. After she chastises him about trespassing and stripping in other people's homes, he reminds her of Natsu and Erza's promised battle, which Lucy had forgotten about. They leave together to watch the match.
When they arrive at the battlefield, the conversation soon goes into who is the strongest member of Fairy Tail. Gray and Elfman mention Mystogan and Laxus Dreyar, but definitely nominate Erza as the strongest female.
Aika came out of the guild, she saw Natsu and ran to hug him. When Natsu saw her he immediately smiled and hugged her.
"I missed you so much" she said
"I missed you too, don't worry, I beat up those bad guys" Natsu smiled
"Your so reckless" Aika said pulling away and going to hug Erza
"How was the battle?" Aika asked
"Same as always, would've been better if you were there" Erza said, Aika smiled and went off to the side.
She hugged Grey and he told her that Natsu and Erza was going to have a battle again. Aika bet that he would loose and Grey agreed.
Moments later, the fight begins, and Erza changes into her Flame Empress Armor, an armor that halves the effectiveness of flames. Natsu and Erza begin their fight, but a messenger of the Council interrupts the fight and arrests Erza. The rest of Fairy Tail retreats to the guild and are upset about the recent events, but conclude they cannot do anything against the council.
Natsu, having been transformed into a gecko and trapped in a glass, insists that they let him out and turn him back to his original form. Mirajane and Makarov don't let him out though, in fear that he'll do something stupid like fight against the Council. Aika sat at the bar next to Cana and sighed ignoring her big brother's attempts to get out.
Meanwhile, at the Fiore Branch of the National Council, Erza is greeted by a Thought Projection of Siegrain just before she enters the courtroom. They argue shortly and then Siegrain leaves, but not before reminding her to keep her quiet about the past for both of their sakes. Inside the court, Erza's prosecution begins.
Back at Fairy Tail, Lucy is now taking Natsu's side on the incident. She thinks they should leave immediately, but Makarov counters that no matter how fast they go, they won't reach her in time. At the same time, Natsu is still shouting to be let out, and Makarov asks him if he really wants to, which quiets him down.
Makarov then breaks the glass, and the gecko is shown to be Macao Conbolt, who "owed" one to Natsu. He had transformed himself into a gecko in order to pose as Natsu. The real Natsu has already left in order to pursue Erza. The Mages panic, but Makarov states that they will only patiently wait for the results.
"That's my big brother for you" Aika said flipping through a Sorcerer's weekly magazine
Erza is found guilty of the charges as witnesses claim that the culprit had been an armored female Mage. In those same moments, Natsu, dressed as an undertaking Erza, shows up and destroys half the courtroom. They are both escorted to the cells, where Erza tells Natsu that the arrest was just a show.
The Council convicted her in order to appear as if they actually enforce the law. She is momentarily mad at him, but later shows her appreciation for his thoughtfulness.
The next day, both Erza and Natsu return to the guild. Aika hugged them both. Natsu wants to continue the battle, but Erza isn't in the mood. When he charges in, she gets up and launches a punch right into his stomach, which makes him faint. The guild erupts in laughter, but suddenly everyone, except Makarov and Aika, gets drowsy and falls asleep. A cloaked figure enters the room, which is revealed to be Mystogan.
He takes a job from the board and departs after patting Aika on the head, waking everyone up afterwards. Because of Mystogan's nature of putting people to sleep when he's around, no one, but the Master and Aika knows how he looks like.
"How come Aika knows?" Grey askes
Laxus, on the second floor then interrupts by saying that he too knows what Mystogan looks like and that Mystogan doesn't put Aika to sleep because of something that happened a long time ago.
Laxus, just like Mystogan, is known as one of the strongest in Fairy Tail. Natsu wakes up (minutes after the others) and challenges Laxus to a fight. As he jumps to hit Laxus, the Master slams him down, saying that no one is allowed on the second floor except for the ones who have his permission. Laxus laughs, boasting that he's the strongest and won't lose to Erza or Mystogan.
Aika cracks her knuckles "would you like to test that"
"Now now Aika their's no need to fight" Laxus said
Some time later, Lucy asks Mirajane why the second floor is off-limits. She explains that there is where they keep their S-Class requests and that only a Mage of the same level can pick them up.
When she returns home, Lucy finds Natsu and Happy exercising in her room. She wants to kick them out, but they show her an S-Class request. Natsu and Happy are going, but Lucy doesn't want to. They leave and let the request onto the floor. She reads the request and finds that the reward includes one of the 12 Zodiac Gate keys.
Instantly changing her mind, she follows them willingly to go on the quest. At the guild, Mirajane tells the Master that an S-Class request is missing, causing Makarov to spit out his coffee in a delayed response.
"That's my brother for ya" Aika said
"You knew about this" Makarov asked
"No, I'm just saying he's the only one stupid enough to take one" Aika said before leaving with Mira.