Continuing from the previous season, SailorStars is split into two parts. The initial segment addresses lingering issues from SuperS and welcomes back Haruka, Michiru, Setsuna, and a rejuvenated Hotaru. The latter part delves into the original manga storyline. Usagi says goodbye to Mamoru as he departs for studies in America, paving the way for the arrival of the Three Lights—Seiya, Taiki, and Yaten, a popular idol trio. The primary antagonist, Galaxia, seeks domination by harvesting human Star Seeds. To combat her, the Sailor Starlights emerge, determined to thwart Galaxia independently of Sailormoon.