In 1999 an alien spaceship crashed onto the earth. Hidden on board were the secrets of a unique science known as Robot technology. Databanks found in the ship were transferred to the Earth Robotech Computer Complex. In 2009, an alien search party arrived from hyper-space to reclaim their lost databank. The united Earth Government was forced into an Inter Galactic war. Earth forces were able to win the first battle... but at a great cost. The planet was virtually destroyed. New population centres grew out of the ashes... It is now 2027, a second armada sent by the aliens is nearing earth, they have come to recapture the secrets of their lost technology and then destroy the Earth.

In the year 2044 AD, the human race has amped-up its space exploration and reached out to the stars through the miracle of ROBOTECHNOLOGY, but not without bringing intergalactic war upon the Earth itself. Heroes will die and allegiances will shift. But in the midst of combat, perhaps peace will spring up through the charred remains of battered history. One of the greatest science fiction sagas of all time continues...

It is the year 2031, as the spores of the Flower of Life spread over the remains of the SDF-1 and SDF-2, the Invid land out of Hyperspace, on a head-on collision with the Earth. They crash on the spot, quickly turning it into their massive hive, later to be called Reflex Point. In a matter of moments, the Invid take control of the devastated planet.

Robotech II: The Sentinels was an attempt to continue the original 1985 Robotech television series. The project was cancelled in 1986. The aborted Sentinels series would have followed the ongoing adventures of Rick Hunter and Lisa Hayes and the rest of the Robotech Expeditionary Force (REF) during the events of The Robotech Masters and The New Generation series.

Codename: Robotech is an animated pilot that preceded the original 1985 Robotech television series. It is set within the events of the First Robotech War.