Natsu and friends visit the very first Wizard Guild to take a quest that no one has ever completed: the "100 Years Quest." Meanwhile, new recruits join Fairy Tail, but one of them is a little odder than usual...

The town of Ermina turns out to be a city for fish, where the whole town is submerged in water during high tide. The moment the party mentions Water God Dragon, the fish turn hostile.

As a thank-you for saving Ermina, Mercphobia gives the group information on the rest of the Five Dragon Gods. And while they're in the town of Tekka, they encounter someone who looks exactly like Erza...