Area 51 by Cool Gus Publishing

Since before the dawning of modern man, an alien mothership and nine abandoned flying saucers have been hidden away in Area 51, a top-secret military base in the Nevada desert. There, scientists have studied the crafts, hoping to unlock the secrets of the alien technology and, perhaps, the origins of life on Earth. But now a deranged general wants to activate the mothership's interstellar drive—and the consequences could prove catastrophic for humankind.