Years into the future, aliens and humans try to live in peace and harmony - but can they? While Earth opens its doors, the Power Rangers open an academy to develop the next generation of highly trained peacekeepers. It's none too soon when a planet-conquering alien force turns its destructive attention to Earth. All that stands in the way of our planet's demise and the fall of our universe is the newest breed of Power Rangers: S.P.D. - Space Patrol Delta!