Fairy Tail, Year X791.Seven years have passed since the incident at Sirius Island and the Fairy Tail guild has become the weakest wizards' guild in Fiore, indebted to Twilight Ogre, a new local guild. The remaining Fairy Tail members are visited by Ichiya and the Tri-men of Blue Pegasus, who tell them that they have recently discovered a change in the magical energy around the waters where Sirius Island once stood. There they discover that the island was protected against Acnologia's attack by the spirit of Mavis Vermilion, who used her power to help everyone on the island cast the defensive Fairy Sphere spell that inadvertently caused them to be frozen in time for seven years. The missing members return to their guild, force the members of Twilight Ogre to flee, and reunite with their friends.