A group of grad students book passage on a fishing boat, The Harbinger, to study a pod of orcas in the Bering Sea. But when the ship’s crew discovers a piece of mysterious Soviet space wreckage in the ice, things get deadly. The Russians experimented with tardigrades, small but resilient animals able to withstand extreme space radiation. The crew realizes that the creatures have survived their captivity in ice, and not without frightening mutation. After being locked in ice for three decades, the tardigrades won’t give up the warmth of human contact without a fight.