In 2567, the civilian crew of a Terran Federation survey ship discovers a derelict alien vessel in the icy reaches of Gliese 556. As they explore its eerie corridors, they uncover horrifying secrets: a ship of unimaginable age, mutilated remains of unknown alien beings, and an ancient evil stalking the wreck. Cut off and hunted, their fate entwines with mysteries far greater than themselves—of relentless foes, and sacrifices that echo through eternity.