There are people living in holes deep underneath the earth. They make our pants and shirts. They make our TVs. They cannot escape... Portal is the story of Alex and Katrina, twins living in the holes. They are forced to work- if they don't- they don't eat. The only way to travel from one hole to another is by way of 'portals'- enigmatic black slabs that can be obeyed, but not commanded. Katrina discovers her experience travelling between the portals is unique- and may be the key to escaping to a world she isn't sure even exists. Portal is the first of "The Incarnations of the Americas" series.