When the sky becomes your prison, how far will you fall to find the truth?

Kael, an elite expedition leader, is swallowed by a mysterious portal and exiled to a strange world where technology is lost and legends are alive. Years later, his peaceful life is shattered when he's kidnapped and trapped aboard a flying fortress in the skies.

With the help of Kuro, a cunning fellow prisoner, Kael must escape a sky filled with enemies and uncover the dark secrets that led him here.
But every answer comes with a price — and the real battle is only just beginning.