From the Haven Space Station, Hannah Wagner, a young company soldier, discovers a mysterious brown fog enveloping the Earth cutting off all communications. What just happened? All her instruments indicate that this toxic cloud not only interfered with every system, but is also so lethal everyone on the planet must already be dead. Struggling to cope with the fact she will never see her sister again, Hannah and the crew fight over whether they should go back to Earth to save potential survivors or stay put in the station’s ‘algae symbiosis system’ and save their own skin.