No one makes the long journey to Jupiter because they want to. They go because they need the work, or they have no choice. The Europan science base is just one of a hundred tiny little corporate outposts in orbit of the great planet, and no one ever thought it very important.
Ada is a geologist come to Europa to escape a bad divorce, Shaun wants to find life on another planet, and Magda just hopes that the cult she escaped from as a child isn't coming after her. When their science team discovers signs of alien technology buried deep under the surface of Europa, their lives are forfeit, caught between the religious zealotry of the Eye, and the machinations of the company that controls Jupiter and all its moons. They have only one chance to survive: head beneath the icy surface of Europa, and discover the secrets hidden inside the Netherforge.