"I can't believe it! Serena's keen on studying and Amy's forgotten something!?
"What's wrong with this!?"
"Let's take advantage of Serena's present state before she reverts back to her normal self.."
-Mina, Lita, and Raye about Serena and Amy's changes in behavior
Amy feels like all she ever does is study, and after hearing a teacher tell Amy that he thinks she is being held back by helping students, Serena feels as though she is holding Amy back. She talks with Darien, who says she would be a good doctor, and Kaorinite targets her next. Amy goes over to the swimming pool where she meets Michelle, whom she races against. They tie, but Amy seems to have slowed down, and when Michelle accuses her of intentionally slowing down, this hurts Amy's feelings and she runs away.
Amy later returns to the pool, and Michelle apologizes for what she said and challenges Amy to another race. They tie again, and Michelle tells Amy it was a good race before she leaves with Amara. Then, Kaorinite sends a Daimon pod into the water, transforming it into a Daimon named Dovlin, who slams Amy against a window. Serena arrives with Luna and transforms into Sailor Moon and fights Dovlin, who traps her and extracts Amy's Pure Heart.
Kaorinite takes the Pure Heart, but Tuxedo Mask attacks her and takes it back. Dovlin is knocked into the water and uses a life raft to stay afloat, but Luna and Artemis damage it, and Sailor Moon destroys Dovlin with Moon Spiral Heart Attack. Sailor Moon returns to Pure Heart to Amy. Sailor Neptune and Sailor Uranus watch, aware that Amy's Pure Heart was not one of the three crystals.
- First and last appearance of Daimon Dovlin.
- Third time Doctor Tomoe does not appear.
- Linda Ballantyne as Serena Tsukino/Sailor Moon
- Liza Balkan as Amy Mizuno/Sailor Mercury
- Katie Griffin as Raye Hino/Sailor Mars
- Susan Roman as Lita Kino/Sailor Jupiter
- Emilie Barlow as Mina Aino/Sailor Venus
- Vince Corazza as Darien Shields/Tuxedo Mask
- Jill Frappier as Luna
- Ron Rubin as Artemis
- Kirsten Bishop as Kaorinite
- Julie Lemieux as Dovlin