The Elementals - The Endless Dark Ocean - The Elementals, #1

Without apparent reasons the Astral galaxy has been invaded by enormous and powerful unknown, cruel and devastating breed's fleets, unexpectedly emerging from deep space. A concocted galactic coalition intends to resist, but the proud fleets from those who were up to that point, ancient and respected empires, are mercilessly swept away, battle after battle, while their systems and planets are conquered InexorablyFrom the Espacia Planet, in the Solarian System located nearby the galactic edge, a young but very advanced breed will secretly send a small expedition to the distant Lumina Galaxy in search of a mysterious object which could save the Astral Galaxy from its complete destruction.
Therefore, young Captain Lena Valir, will be assigned to lead this turbulent incursion along with a small crew, safeguarded also by an Espacian Foreign Intelligence undercover agent and by the intriguing Professor Trivian, an advanced and unusual aged scientist who has handled the secrets concerning the object's origin and its future implications during more than four centuries, in the shadows.