As the battle against Acnologia rages on, Natsu goes in to kill Zeref; however Mavis stops them, revealing to the latter that her plan can end her former lover's eternal life. Despite her attempts, the Black Mage refuses to consider the possibility of him dying, and in response, absorbs Fairy Heart's power, morphing into an infinite magical figure that surpasses time.
As Natsu goes into Dragon Force and begins to attack Zeref, Mavis comes between the two, shielding Zeref from Natsu. Mavis' goal is to talk to Zeref of a way to end Zeref's curse, but Zeref denies this. He uses this chance empty Mavis of her power, gaining Fairy Heart. Meanwhile, on the Christina, Team Blue Pegasus, Erza, Wendy, Anna, and Jellal are being chased by Acnologia. Acnologia damages the ship and in response to this, Jellal says to Erza that he will distract Acnologia. Back at the Fairy Tail guild, Zeref is explaining to Mavis his plan to go back in time to 400 years ago. He assures Mavis that he will fix humanity's future, with Natsu, by getting rid of Acnologia before he gains power. Mavis objects to the idea but falls unconscious. Natsu rushes to Mavis' side and Zeref assures him that Mavis is not dead, but all of her magic is gone. Zeref then activates Fairy Heart, creating a shock wave. After activation, Zeref says that Fairy Heart is the infinite magic power; the power of the gods that surpasses time. Zeref's apperence has now changed, with his hair and eyes are white. White wings appear behind Zeref's back. He wears a long, white, open coat with high pointed collars. Designs are on the coat, starting from the bottom and going up half-way. The pants are a matching set with the same patterns on the coat and white.