The oldest dream mankind ever had was to fly.

After the Earth was ravaged by climate change, and people were driven to coastal cities, the last military force in the world, the Sentinels, equipped with their mechanical wings, were elected to keep the peace.

The story begins in The Pillar, a city in Cyprus, when one young Sentinel is mysteriously found dead, the first case of such an act since the inception of the Sentinel Corps. Park Kang-Ho, the leader of the small Sentinel force temporarily stationed in The Pillar, quickly begins an investigation, unearthing a web of corruption and conspiration that extends further than the reach of his wings.

He soon finds himself stranded on an island where the main event is an illegal race held between pilots of marvelous flying aircrafts, coming from all corners of the world. In his quest to solve his investigation, he aids the local team, its young pilot helming The Condor, the fastest ship in the world.