The film opens with Lumina using her pearl magic to prepare a fake coronation held for Kuda. Lumina crowns Kuda as "Princess Kuda, Ruler of the Seven Seas." Kuda then gives a pretend ball in honor of her coronation, in which she and Lumina dance.

Suddenly, Scylla comes and Lumina disbands the party and hides the pearls she used in the oysters she got them from. Unfortunately, one oyster snaps shut too quickly, leaving a pearl out. Lumina tries to put it back inside the oyster without Scylla noticing, but Scylla does notice. She scolds Lumina for using her pearl magic outside because "bad people"...