Ali and En hatch another plan to save their Doom Tree. They scheme to collect energy from humans at a new virtual reality game. Everyone is excited about the game and a line forms. En picks the card and Ali plays his flute to turn it into a monster. The cardian starts attacking everyone. When Sailor moon tries to use her tiara to destroy the monster, it doesn't work! The Moonlight Knight and the other Sailor Warriors arrive just in time. After the Warriors defeat the cardian, Usagi is left more confused than ever. Why does her tiara not work? If he's not Mamoru, just who is the Moonlight Knight?