The people of Earth have been led to believe that the SDF-1 has been destroyed. Earth’s leaders don’t want the populace to panic about the emergence of the Zentraedi, and they also believe that the SDF-1’s presence is a danger to Earth. After an attack in Earth’s orbit by the Zentraedi, Earth’s leaders prepare to take drastic measures – involving “Project: Grand Cannon”… Meanwhile, Zentraedi spies Bron, Rico, and Konda are aboard the SDF-1, and Azonia and Khyron continue to scheme against Breetai… Also, a deadly version of Roy is causing trouble on the SDF-1, while the real Roy has been taken prisoner by Dr Lazlo Zand who promises to reveal secrets of the SDF-1’s history.

Based on the cult classic animated series, ROBOTECH: THE MACROSS SAGA VOL. 4 is a sci-fi extravaganza of fast-paced action, high-tech battles, and burgeoning romance. Years ago when the SDF-1 crashed on Earth, the world knew that the alien spacecraft was the harbinger of an extraterrestrial invasion. Using the technology from the galactic warship, humans quickly began to develop biomechanical weapons to prepare for the upcoming onslaught. Now as the war reaches a fateful critical stage and another hero falls in battle, the alien Zentraedi enact an aggressive campaign to destroy the Earth's only hope of victory, the lost SDF-1 spaceship.

A Warp In The Space-Time Continuum... The SDF-3 has remanifested from spacefold, but no one aboard has the faintest idea where they are. The ship appears to be grounded in some glowing fog, ensnared by light itself. Lang and Rem dub the phenomenon "newspace" -- but are at a loss to explain what it really is and who, or what, is keeping them there. For Lang, it seems like old times: The ship's Protoculture drives have disappeared. But other events are transpiring, unbeknownst to the stranded crew of the SDF-3. In Earthspace, the Ark Angel has been spared the fate suffered by the REF main fleet after the Invid transubstantiation. Vince and Jean Grant decide that the only logical course of action is to try and locate the SDF-3... On Haydon IV, something has awakened the Awareness -- and a mysterious change comes over the Haydonites. Exedore and the four Sterlings suddenly find themselves imprisoned beneath the surface -- as the planet leaves orbit, destination unknown... All of the pieces of this strange cosmic puzzle are about to come together...and the ultimate conflict is imminent. The question is: Will The Universe Survive?

Ten years ago, a mysterious space-ship crashed on Macross Island… In the intervening years, the people of Earth have use the ‘Robotechnology’ from the ship to significantly advance their own technology. The ship – named by the humans as the Super-Dimension Fortress – actually belongs to a race of giant aliens, the Zentraedi. The Zentraedi attack and the crew of the SDF-1 are forced to space-fold away – take a chunk of Macross City (and its 70,000 citizens) with them. The SDF-1 has been in the midst of a long journey back to Earth. Along the way, the SDF-1’s Captain Gloval, was killed under mysterious circumstances and Lisa Hayes took over his position… Rick appears to have gone blind, but has somehow developed a different kind of vision – possibly connected to the Protoculture that powers Robotechnology. He is now concerned that Minmei has been affected… It emerges that Earth’s leaders had told the populace that the SDF-1 had been destroyed, in order to avoid panic about the threat of the Zentraedi. Lisa Hayes has been trying to persuade Earth’s leaders (including her own father) to let them return home, to little avail…Meanwhile, Earth’s Joint Chiefs have been preparing their own powerful defences against a possible Zentraedi attack… Meanwhile, Roy is being held prisoner by Dr Lazlo Zand, one of the first scientists to originally board the SDF-1. During his exploration, Zand had discovered a cloning facility – and the fact that the SDF-1 could travel through parallel dimensions… A deadly clone of Roy is doing Zand’s bidding on the SDF-1, and has murdered TR Edwards, who also knows the secrets of the SDF-1. And finally, Minmei has asked Rick to take her on a secret mission to Aluce Base, while Breetai has goaded Miriya into seeking revenge on Max Sterling.

The Global Civil War was about to make Humankind extinct, when the stupendous Super Dimensional Fortress dispatched to Earth by a dying alien genius changed all that forever. Humanity's only hope lay in a corps of untried young men and women gifted with powers they didn't fully understand. Then the most feared conquerors in the universe attacked, determined to destroy them for no reason they could comprehend.

Ten years ago, a mysterious ship crashed on Macross Island… In the intervening years, the people of Earth have used the ‘Robtechnology’ from the ship to significantly advance their own technology. The ship – named by the humans as the Super-Dimension Fortress – actually belongs to a race of giant aliens, the Zentraedi. The Zentraedi attack and the crew of the SDF-1 are forced to space-fold away – taking a chunk of Macross City with them. The SDF-1 has been in the midst of a long journey back to Earth. On the journey, the SDF-1’s Captain, Henry Gloval, was killed under mysterious circumstances and Lisa Hayes took over his position… Claudia has evidence linking her partner Roy to Gloval’s death. The Vermillion Squad – Rick, Max and Ben – plus Lisa and Kramer, were taken prisoner aboard the Zentraedi flagship and interrogated by the aliens. They escaped but Ben was slain by Miriya. Rick appears to have gone blind, but has somehow developed a different kind of vision – possibly connected to Robotechnology. The SDF-1 recently received a message from Earth – telling them to stay away… And then Roy Fokker was shot… by himself?

An ancient force threatens the Earth as well as worlds on the far side of the universe.