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.

Dragon Eaters are after Mercphobia to gain the power of Water God Dragon. Natsu and the others join in the battle to aid him, but the foes are strong. Meanwhile, Gajeel, Juvia, and Lily investigate Touka despite the protest from Levy.

Natsu, Wendy, and Erza are captured by the Diabolos, and Lucy sets out to go rescue them. On her way, she meets someone unexpected… Meanwhile, Jellal finds out the secret of Touka.

Natsu and the others manage to drive away the Diabolos for now. Then Mercphobia starts to destroy Ermina and its people, which forces Natsu and his friends to make a tough decision. Meanwhile, the White Mage sets out to do what she came to do…

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...

Natsu, Lucy, Gray, and Erza fight their own Guild friends to free them from the hypnosis. Then, Wendy encounters a new Dragon Eater. And another Dragon Eater Natsu meets turns out to be...

Natsu fights Wraith, the Spirit Dragon, but Natsu's attacks are useless against him. On the verge of death, Natsu sees Zeref, Mavis, and Igneel. As a thoughtform, Natsu is finally able to attack Wraith. That's when Wraith finds a body to possess...