Complex sentence: The game begins during a ceremony organized by Colonel Flag Gilgister of the Lagoon Empire Army of the East to awaken the Dark Genie, a legendary creature of great malevolent power, whom Flag wishes to use to control the world.
Split into simpler sentences: The game begins during a ceremony to awaken the Dark Genie, a legendary creature of great malevolent power. The ceremony has been organized by Colonel Flag Gilgister of the Lagoon Empire Army of the East, who wishes to use the Genie's power to control the world.