Sailormoon Sailor Stars is divided into two arc The first arc solve some conflict from the last season with old villain queen Nephrenia(Nehelenia) And her new allies Mirror Parredary.
The segundo arc start with Mamoru who goes to America(Harvard) to study. The new villain for arc two is Sailor Galaxia. This is where Sailor Starlights step in. Seiya(Sailor estrela Fighter) fell in amor with Usagi.Also, besides Sailor Starlights there another new characters Sailor Chibichibi Moon and Princess Kakyuu.
You can watch the last episodes of Sailor Stars on