Setsuna Meioh: Sailor Pluto
The Sailor Guardians must stop a plant called Tellu from stealing the Hostes from humans. Meanwhile, a college student named Setsuna Meioh is investigating the Sankakusu Delta, but she too falls victim to the Tellu plant.
Aired 09/05/2016EP 6 - Setsuna Meioh: Sailor Pluto
2016
Pretty Guardian Sailor Moon Crystal: Season 3
The new season will assemble all 10 Senshi — specifically, the popular outer Senshi such as Sailor Uranus, Sailor Neptune, and Sailor Saturn will join Sailor Moon, Sailor Chibi Moon, and the others. The new season will adapt the arc from the fifth and sixth volumes of the complete edition of Naoko Takeuchi's original Sailor Moon manga.
Note: VIZ Media has labeled the 3rd cour as "Season 3", while they have labeled the 1st and 2nd cour of the first season as "Seasons 1-2".