In this Fairy Tail: Final Season Episode 279, we have watched how Natsu Lucy Wendy Lyon and others save the town of Margaret and the guild Lamia Scale. At first, we see Natsu run Havoc because Shelia steals Happy from Natsu to fly and find the monster tamer of Orochi no Fin with Wendy.
After flying for a while they find a group of guild member of Orochi no Fin. So, they attacked them to find the monster tamer for stopping the invasion of monster to the city.
After fighting for a while Wendy recognizes Bluenote Stinger, a former member of Grimoire Heart whom they fought on Tenrou Island.
When Bluenote sees Wendy and Shelia, he activates his gravity magic to make them immobilized. Then Bluenote tried to harm Shelia but Natsu came and save her in a nick of time.
By seeing Natsu Bluenote become irritated and activate his Blackhole magic spell to kill Natsu.
Because of the training of past year, Natsu becomes so powerful that he defeated Bluenote in one Dragon’s breath attack.
With Bluenote defeated, Orochi no Fin surrendered. After the fight, Wendy and Charla go with Natsu and Lucy to find other members of Fairy Tail. They start their journey by going to Rain Bringer village where rain never stops. With that, the episode ends but I think you know who they will find in the village.