MUSICAL BIOHAZARD Voice of Gaia is set in an unspecified year where the threat of bioterrorism has continued to increase in extremity Much of the story is set in and around the walled Croatian city of Dubrovnik on the Adriatic seacoast which faces attack from Them zombies infected by an ancient virus The survivors in Dubrovnik are protected by both their wall and by music as melodies are known to calm Them surprising their violent urges