A year ago, Anne Houlihan uncovered a wormhole to Junction, a patchwork planet of competing alien biomes. Now, she and Daisuke are going back to investigate The Howling Mountain, the possible location of a wormhole into space. Her mission headed by an eccentric millionaire, Anne believes she will have a chance to learn more about the origin of Junction and its varied ecosystems. The mission has purposes beyond what she knows, however, and so does the planet. As the expedition tears its way across the alien landscape, Anne must fight to protect its lifeforms, herself, and the Earth.