Watch Sailor Moon Crystal: Season I & II Online

Like the R Season, Sailor Stars is divided into two arcs: The first arc (also filler) solves some conflicts from the SuperS season, and also sees the return of the Outer Senshi, Haruka, Michiru, Setsuna, and Hotaru (now reborn as a child). The second arc is the actual plot from the manga. Usagi bids farewell to Mamoru, who is going to America to study abroad. In his place comes the Three Lights, an idol trio consisting of three boys, Seiya, Taiki, and Yaten. The new enemy is Galaxia, a woman who desires to rule the entire galaxy by collecting the Star Seeds of humans. Three new Senshi appear, the Sailor Starlights, who also intend to stop Galaxia without Sailor Moon's help.

Everywhere around the world, the children sleep. Unaware of danger lurking in the shadows. But tonight, a strange darkness floats in the wind. And the children, one by one, begin to disappear. It seems to be a supernatural force that feeds on their dreams. The evil queen, Badiyanu, and her loyal fairies assist in using the "Black Dream Hole" to swallow the earth. It is up to Sailor Moon and the Sailor Soldiers to prevent the approaching Darkness. (Source: ANN)

The first episode is a summary of SM, SM R and SM S, the second episode is about Haruka and Michiru on a cruise ship. They fight one of the SuperS enemies and decide to leave this villain to the classical Sailor Team. (That's an explanation why the outer Sailor Team doesn't appear in this season.) In episode 3 Chibiusa uncovers one of her classmates as a monster and fights her with the Sailor Team in a vampire castle.

Quiet bookworm of the Sailor Senshi Ami takes pride in her studies, but a rival naming himself "Mercurius" is suddenly outscoring her on the national exams. Combine this with a sudden love letter and a youma feeding on Ami's stress over the whole situation, and Sailor Mercury finds herself in a huge pinch. (Source: ANN)

SuperS centers heavily on Chibi-usa and the Sailor Team. A new enemy, the Dead Moon Circus, has now appeared. Their motive is to find the Golden Dream Mirror that would be used to rule the world. To do this, the enemy attacks innocent victims for their Dream Mirrors and test their energy. Chibi-usa also has a new ally on her side, Pegasus. This season also sees the Sailor Senshi obtaining new powers.