: Natsu and Lucy are shocked to find Gray seemingly serving as a high-ranking member of Avatar. Gray claims he has abandoned Fairy Tail to pursue the "Purification Strategy," a plan to summon Zeref by sacrificing an entire city.
: Lucy showcases her new Star Dress abilities, specifically her "Cancer Form," which allows her to fight with twin blades. Fairy Tail: Final Series Episode 4
You can find more detailed summaries and fan discussions on the Fairy Tail Wiki or platforms like MyAnimeList. Fairy Tail Final Season Episode 4 Review : Natsu and Lucy are shocked to find