In this Fairy Tail OVA 3, Natsu and the others accidentally went back to the past because of a strange book. The fun begins when they see themselves as little kids but they have to figure out how to come back to the present time.The first scene was at the Fairy Tail bar. Together with Charlee, Wendy was holding Natsu's muffler and she's looking for him. The lady bartender tells her that Natsu and Erza are at the storage. Wendy thought that Natsu might have spaced-out and dropped the muffler.
At the storage, Natsu and the others are cleaning the whole place, because it's their punishment for destroying the buildings in town. Lucy was complaining because she wasn't supposed to be there. Meanwhile, Natsu felt that there's something missing. Happy passed by and noticed Natsu's not wearing his muffler. Lucy also interfered and asked Natsu about the scar on his neck, and everyone stopped what they are doing and got interested as well.
[GoogleAd]Unexpectedly, Natsu breaks down and shakes in fear! He doesn't want to remember the guy who gave him the scar. Lucy was so surprised at Natsu's reaction that she fell off from the ladder. As they tried to catch the falling Lucy, a book called "Memory Day's fell off, too. Suddenly, a huge explosion of light came out of the book. When the light was gone, Natsu and the others were blown away when they saw that the whole place has gone back to the way it used to be!
They saw some kids, it looks like they are the little Erza, Natsu and Gray. Erza thought that they shouldn't do anything in this past, they might ruin the future. But it's too late, Natsu and Gray were already missing.
Erza and Lucy disguised themselves as bunny girls to find Natsu and Gray. On separate locations, Erza and Lucy had the chance to talk to their younger selves. This part is quite heart-touching, because they somehow inspired the younger ones. While Natsu and Gray saw their younger selves fighting.Finally, Erza understands the book. This book will take you to a part of your life that you want to forget. Natsu was thinking about his scar when they were transported to the past. And because of that, only Natsu can come back. Erza, Lucy, Gray and Happy searched for Natsu, because they have to touch him before the memory of the book expires.
Natsu talks to his younger self, but the little boy got frightened and attacked him. Accidentally, the young Natsu wounded himself in the neck. Just in the nick of time, they found Natsu, and everyone jumped at him. Erza was right, and now they came back to the present. They all agreed that there's nothing to change in their past, everything that happened before has a reason. The story ended with Natsu still confused with his scar.