Cobra's beloved cyborg companion, Armaroid Lady, is fading away and nobody knows why. To find out how to save her, he journeys to the Spring of Time, where he can dive into time itself and see events long gone. While swimming through Lady's past, he accidentally gets caught in a vortex and finds himself transported back in time. Once there, he encounters the beautiful princess Emeralda of the Sanborn duchy - the very woman he loved and who will become Armaroid Lady. Now Cobra must confront not only Emeralda's political enemies, Lord Gilos and his murderous bodyguard Manidou, but the ghosts of the past as well, all the while desperately hoping to discover what is making Lady's future existence disappear.