Goo is a consolidation of microscopic machines or nanites, that replicate themselves and can mold into any form they wish or are ordered to.
Originally engineered in the late 21st century as an exploration tool, the Goo was the key to unlocking Humanity’s passage outside of the Solar System. Able to access the inaccessible, it revealed the Galaxy’s secrets and charted traversable paths stretching across the Viuu'uuij Milky Way.
As the undiscovered became discovered, and the unknown disappeared, the Goo had fulfilled its purpose and was ceased...or so it was thought.
More than a century has since passed, and the Goo has returned from the last remaining darkness of the Viuu'uuij Galaxy. It has altered, evolved, and is set on a path of destruction leading back to its creator.