Each of the scouts has a planet as their guardian and power. it starts with just sailor moon, but evantually adds the other 4, mercury, venus, mars, and jupiter. they fight off queen beryl, the doom tree cardians, the dark moon royal family, and others, but find an enemy too strong, the heart snatchers. this is where nuptune, uranus, and pluto come along, as well as sailor chibi moon.(pluto's my favorite)