Ripley Gaines, a brilliant archaeologist, has spent his life searching for an elusive artifact to prove his controversial theory. What he finds shocks even him. The discovery rewrites human history and promises to change the planet's future. It has to be suppressed. The most powerful forces in the world align against him, and a deadly competition for the artifact ensues. Capturing Gaines is not enough; he, and everyone who has seen the artifact, must be killed. His only hope is to stay alive long enough to decode the Cosega Sequence.