From the publisher's website:
Eons past, your ancestors searched for intelligent life in the black void of space. The search proved fruitless; they were alone. Desolate, they used their technology to send inhabitable planets the seeds of life and waited. Legend says the weight of their solitude was so overwhelming, they faded into nothingness. In their absence, over millions of years, Alien races evolved. To aid their children, your ancestors left a legacy: a cache of technology and hyperspace gates. Your ancestors meant these gifts to encourage communication and harmony between their children. However, without the guiding touch of their elder hand, neither you nor your Alien brethren knew peace. But you did know war. Welcome to the Cosmic Age, where the sky isn't studied for its beauty, but instead watched against invasion. Meanwhile, your own race’s ships seek to colonize your Alien brethren’s planets and gain cosmic supremacy.