Nephrite plans to take advantage of humans' greatest weakness, love, to gather energy for the Dark Kingdom. He creates a Youma from Bridal shop mannequin. Luna suspects Makoto, a tomboyish Middle School girl that's just transferred to Usagi's school, of being the fourth Sailor Senshi.
Makoto, along with Usagi and Ami stop by the allegedly cursed bridal shop. Makoto inadvertedly becomes a victim of Nephrite's plot to steal energy from lovestruck humans and is placed into a trance by a brainwashed Motoki.