Long before mankind existed, the First Civilization of technologically advanced beings inhabited the Earth. They created humanity, and enslaved them by modifying their brains to be manipulable by Pieces of Eden. For some time there was a forced peace, until Adam and Eve stole one of the Pieces, an Apple, and started the Human-First Civilization War. As all were too occupied by the war to see the threat, a major solar flare impacted the Earth, and significantly damaged both mankind and their makers. The people of First Civilization slowly became extinct, while mankind grew and populated the Earth, seeing their predecessors as myths and gods.