The War rages on.During the Battle on Planet Gaia.The Soldiers become ill from a virus and are put in to Cyrogenic Freeze for further studies.The virus starts to show signs of mutation.On the journey back to HQ,the ship is damaged passing through a nebula Storm.The Ship's A.I.(artificial intelligence) "E.V.E" sends Commander Corvo to retrieve the cure on the Planet below(Planet Eden One)But the population have disappeared....or so it seems.But in search for a cure a greater threat comes not just from the Planet below,....but from within.