Codename: Robotech (1985)

After breaking through the Zentraedi's pursuing fleet, Capt. Gloval manages to land his ship, Super Dimensional Fortress One, back on Earth. With that accomplished, Capt. Gloval records a report detailing all the events of this Robotech War, beginning with the alien ship's first arrival on Earth a decade earlier. From that, Gloval describes the adaptation of the ship and its technology in anticipation of its owners' arrival for it. When that happens, a war begins with Gloval and his crew trying to fight with a ship they barely understand and against an enemy with an unknown agenda of its own.