Five hundred years ago, the cure for the common cold went horribly wrong, turning those infected into freaks consumed with hate and rage. Forced underground, the freaks return above ground at night, driven to attack the surface dwellers – their bite infecting thousands more.
To fight the freaks and protect mankind from extinction, scientists created genetically enhanced soldiers. Stronger, faster, with enhanced senses, wardens are trained from birth to protect the weaker humans.