Although Fairy Tail has disbanded and its members are now spread far across Fiore, Natsu Dragneel has not given up on reuniting the guild he and others once called home. Along with his companions Happy and Lucy Heartfilia, he will stop at nothing to keep Fairy Tail and its fiery spirit alive even as they face their most difficult trial yet—the invasion of Fiore by the Alvarez Empire's immense army and their all-too-familiar ruler.