Sailor Moon: Season 3, Episode 17

3 - 17: The Bond of Destiny! Uranus’s Distant Past

Haruka thinks about old times, while Usagi and the inners explore their soon-to-be high school, where they meet Haruka's old racing friend, Elsa Gray...who is a target. Uranus and Neptune, along with the inners, fight to save her heart against the daimon, and her heart is not pure, so it is restored.