Robotech is an 85-episode adaptation of three different anime television series. Within the combined and edited story, Robotechnology refers to the scientific advances discovered in an alien starship known as the SDF-1 (A Super Dimensional Fortress) that crashed on a South Pacific island. With this technology, Earth developed giant robotic machines or mecha (many of which were capable of transforming into vehicles) to fight four successive extraterrestrial invasions, known as the Haydonites, Zentraedi, Invid, & Robotech Masters.
- The First Robotech War (The Macross Saga) concerns humanity's battle against the giant Zentraedi warriors who are sent to earth to retrieve the wrecked starship that contains the last known source of Protoculture in the universe.
- In the Second Robotech War (The Robotech Masters), their rulers, the Robotech Masters, attempt to take up where the Zentraedi left off.
- In the Third Robotech War (The New Generation), the alien Invid have been attracted to earth by events that transpired at the end of the Second Robotech War, and it is up to returning elements of the Robotech Expeditionary Force to fight them off.
- In the Fourth Robotech War (The Shadow Chronicles), the alien Haydonites attack earth & destroy everything they can find. (Warning, Spoilers ahead!) In the end, the situation of the Robotech Expeditionary Force is dire. Space Station Liberty, by far the Robotech Expeditionary Force's largest and most important space station, is gone.