Dragons didn't exist anymore. They all died a long time ago. But Ace existed. A young human who could turn into a dragon, or maybe vice versa. When he wanders into Fairy Tail and joins, he becomes the youngest of the guild. As he ages, he forms bonds with the guild and outsiders. But hardships follow something that should not exist.
When Ace wakes up, soaking wet and with no memories but the possibility of drowning, he has to learn all about this unfamiliar world of magic and wizards. All unfamiliar faces, though one does know him and his past. Even without most knowing where he really did come from, he's welcomed completely and swept into the dangerous and fun adventures of being a Fairy Tail wizard.