Something dangerous is lurking in Sylia's father's old lab, and Sylia becomes to determined to locate the lab (buried underground since the earthquake) and destroy it. Meanwhile, Nene uncovers some dark secrets when she begins investigating some inconsistencies in Sylia and Macky's past.

From the heights of Genom Tower, Galatea has reached out through the Dragon Line and made Tokyo her own. But when Galatea goes one step further and starts absorbing Macky's mind as well, the Knight Sabers know they can wait no longer. Donning their hardsuits, Sylia, Priss, Linna and Nene must penetrate the tower itself and force a showdown with Galatea herself if they are to save the city and the people they love.