Disappearing Stars! The End of Uranus and Neptune

Sailor Moon and the Starlights must face off their own teammates in a battle for their lives. When Galaxia commands the two to take Sailor Moon's Star Seed, they turn on Galaxia and attack her instead, thinking once that her Star Seed is removed, she'll be killed. But Galaxia has no Star Seed, and since Uranus and Neptune betrayed her, she removes their bracelets and leaves them to die.