12,000 years ago aliens came to claim Earth as their very own. That act was illegal under galactic law and now they've been found. With their starship disabled and trapped in a huge cavern, the aliens must wait for humans to develop the technology that will allow them to leave Earth. Millennia pass as they sleep in stasis. Meanwhile, the myth of the feathered serpent gods grows, leading to international kidnapping and murder over who will control the alien technology.