About Crystal Dreams
The Senshi are worried about Crystal Tokyo's awakening. Nothing seems to be happening and the time is coming. As it is nearing the birthday of Usagi Chiba a new dark force, called The 4 Kurozuishous, appear and attack Usagi, taking the Ginzuishou and leaving Usagi powerless. Now a mysterious man who claims to be the Guardian of all living things tells the Senshi that they must search for the Dream Crystal in order to overcome the evil and reach a new level of power...the Dream Senshi. Only then will the Crystal Millenium begin.

(It's set after Sailor Stars and before Crystal Tokyo. Also I am going with the Japanese ver. of Sailor Moon.)