Mary Hughes breaks a taboo by unleashing her ultimate power! Can Mirajane out-ultimate her? Plus, Natsu takes on a giant octopus! And... the debut of the Jiggle Gang?! (Warning: It's not as appealing as it sounds...)

Natsu gives all he's got against a Legion of one: Byro Cracy, who has the power to nullify all magic! Will the other Fairy Tail groups get there in time to pitch in? Or will this be... the beginning of the end?

Just when it looks Fairy Tail is about to have a climactic fight with Byro over the Infinity Clock, Oracion Seis returns, with upgraded powers and a desire to make the ominous clock their own!

Oracion Seis has made off with the Infinity Clock and seems intent on counting down to doomsday. Meanwhile, Fairy Tail regroups, using Cana's divination skills to locate Oracion Seis's targets and choose the best teams to go after them!

Doranbolt... or is that Mest Gryder?... returns! But whose side is he on this time? Meanwhile, teamwork isn't working out for Natsu, Elfman, and Lucy against the threat of Jackpot! Likewise, new partners Erza and Evergreen just can't get along!

Mest and Lahar meet the mystery person that Zentopia has been hiding... or is that hunting down? Gray and Fried face off against one of the Six Generals (and Dan Straight's new object of adoration), Angel! Meanwhile, Erza, Evergreen, and Max are confounded by Cobra, master of sound!

The members of Oración Seis stop fighting Fairy Tail and resume their mission of casting Anti-Links on the celestial wizards hidden in churches, completely lifting the seal on the Infinity Clock's true form, a massive, clockwork dreadnought. Byro, meanwhile, tells Natsu's team of his orders from Lapointe to bring Lucy to Zentopia's archbishop. With Oración Seis's plan complete, "Michelle" reveals her true identity as a member of Oración Seis, Imitatia, who posed as Lucy's relative to manipulate Fairy Tail into helping them. She also reveals her authority as archbishop given to her by the real one, forcing Byro to follow her orders, and kidnaps Lucy.