With two more segments of the Key to Time to go, the TARDIS crew lands in Crystal Tokyo, during the reign of Usagi Tsukino I, Neo Queen Serenity. Unfortunately, the Deimos Temporal Research Station suffered a disaster that killed a lot of people and the two Queens of Mars, Rei Hino of the human Aresians and Taxona of the Ice Warriors, are investigating the reasons behind the disaster. Unfortunately, the Cybermen have resurfaced and intend to something with the prototype time ship Mars had created.
