Protagonist Shelia is tasked by the Science Research Organization (SRO) for which she works to prevent SAI, a military organization, from acquiring a legendary ancient power that can reawaken the dead. The game takes place in a "Land of Sky" located above the Arctic consisting of levitating land masses which are home to ancient creatures.

Protagonist Shelia is tasked by the Science Research Organization (SRO) for which she works to prevent SAI, a military organization, from acquiring a legendary ancient power that can reawaken the dead. The game takes place in a "Land of Sky" located above the Arctic consisting of levitating land masses which are home to ancient creatures.