The Summer, the Beach, Youth and Ghosts

Usagi, Ami, Rei, and Luna set off for a coastal getaway meant as guardian training, only to find their lodging plagued by an unsettling supernatural presence.

Trekking through a stormy forest, the girls are guided by a hooded child named Sakiko to a foreboding mansion on a cliff, which turns out to be Rei's bargain reservation. A trio of costumed servers dressed as classic monsters welcomes them, and Sakiko's towering, severe father warns her away from the visitors. Rei senses a strong supernatural force at work yet rules out a Youma. Ami later finds Sakiko sitting alone and lonely, urging her to befriend the others, before the father drags the girl off and hypnotizes her to force out her psychic abilities, driven by a wish to shame the world that mocked their family's powers.

The hypnosis conjures a ghost that turns on both Ami and the father while Sakiko lies entranced. Sailor Mercury and Sailor Moon try to intervene, but Sailor Moon is overpowered and the apparition keeps attacking even after Sakiko wakes. Told to flee, Sakiko instead stays and destroys the ghost with her own power. Her father then admits he had been using the guests to test her abilities, and by the next day Sakiko is happily playing with the group down on the sand.

The episode is filler with no manga counterpart. DiC skipped it entirely, one of six such omissions from that dub, likely for its lack of ties to the main plot, though Viz later dubbed it and rendered the staff's chant as nonsense rhyme. It is the first episode with no Dark Kingdom involvement whatsoever and no fight against a Youma. The mansion's Addams signage nods to The Addams Family, the costumed servers evoke The Munsters, and Usagi wears the patched swimsuit from episode 16.