There is a rumor that the Mystical Silver Crystal will be exhibited at a high-society costume party. Tuxedo Mask decides to look for it, followed by Usagi, but the Dark Kingdom is still one step ahead. Meanwhile, Rei refuses to cooperate with Usagi and Ami, choosing to act on her own.
Même si Rei accepte volontiers son rôle de guerrière, elle préfère cependant combattre seule de son côté, au grand désespoir d'Usagi qui pensait en faire une nouvelle amie.