In 3025, humanity faces an existential crisis. The protagonist is sent to the past to change history and influence the present. Wars between global robotic forces rage in the future, inflicting severe damage on Earth's environment and resources. After aliens arrive, they demand the right to settle on Earth and share humanity's claim to survival here. Otherwise, war will break out, with Earth as the battlefield. Even if we win, the planet we depend on could suffer unimaginable damage. To prevent this, a person carrying the most advanced technology available is sent back into history aboard a newly developed time-space wormhole transport, to influence and change the future...