The final battle of the Second Robotech War is fought as Zor goes on the rampage to destroy the entire culture created by the Robotech Masters before the arrival of the Invid. His plan fails, causing his destruction and paving the way for the Invid to cultivate the flowers of life that are now seeding the planet and turning the earth into a protoculture greenhouse.

The battle between the Robotech defenders and the Zentraedi is taken tot he very limits of the Solar System as the two forces meet in the rings of Saturn.

Zor and the rest of Dana Sterling's 15th Tactical Squad make a daring trip to the Robotech Masters' flagship in order to rescue General Rolf Emerson, Bowie's guardian, and try and put a stop to the second Robotech Wars.

Nova tracks Bowie and Musica to the crash site of the SDF-1 and makes a startling discovery in regard to the nature of Protoculture and the growing threat of the impending Invid invasion. Zor realizes that the Robotech Masters must be stopped at any cost.

Musica tries to assimilate herself into the "alien" environment she finds on earth. Her joy of discovery in this new world is cut short when Nova Satori, the military police, seeks her out as a spy. Bowie and Musica become a fugitive couple to avoid capture.

A critical battle takes place aboard the Robotech Master's Flagship, as Zor and Musica, a Robotech clone mistress, defect and join the earth forces. A daring escape forms the basis of the new relationship between Zor and members of the 15th Squad.

Trying to escape from the Robotech Masters, Dana and her friends discover many secrets concerning the true nature of the civilization living aboard the flagship of the Robotech Masters and the entire process of biogenetic engineering.

An all out attack is called for, this time incorporating the ground forces of the Army of the Southern Cross. Dana and her squad respond only to be captured in the end by Zor, who has been reactivated by the Robotech Masters to become a Bioroid Captain once again.

Louise Nichols, a member of Dana Sterling's squad, builds a Robotech device that is exploited by the Military Police into an offensive weapon system. The deception causes Louise to break down and attack her friends and fellow soldiers.

A classic Cinderella story unfolds as Marie Angel and Sean Phillips plan a very important date. Things don't turn out for the best and Marie ends up running away from the truth of Sean's past.

Things on earth are settling into a pleasant domestic routine while the Robotech Masters and their bioroid army fights for their very survival against the pressure of the Tactical Space Corps of the Army of the Southern Cross.

General Leonard calls for an all out attack against the Robotech Masters forces in Earth orbit near the moon. The plan does not include the 15th Tactical Squad, which spends most of its time trying to help Zor regain his memory at the crash site of the SDF-1.

Captain Gloval plans a daring strategy to convert the SDF-1 into a robotic configuration to do battle with the Zentraedi forces.

General Leonard is convinced that Zor can help his army get information regarding the Robotech Masters (whether he is human or not). He assigns Zor a commission in the 15th squad and places Dana Sterling in charge of his "rehabilitation." By this time, Dana has begun to feel somehow related to this new recruit – alien or not.

Zor, the Robotech Master's unsuspecting spy, is subjected to rigorous psychological tests to determine if he is human. Dana cannot allow him to go unchallenged for the destruction he has caused and plans a daring midnight raid on the hospital where Zor is sequestered to extract her revenge.

The Robotech Masters plan a strange deception by introducing Zor into the ranks of the 15th Tactical Squadron of the Army of the Southern Cross in the hope of getting some information regarding earth's knowledge of protoculture.

Dana Sterling tries to get the war with the Robotech Masters out of her mind by attending a concert with Bowie. She meets a singer who she finds interesting only to discover later that he is a spy working for the military police.

Failing in their attempts at capturing the humans who entered their ship, the Robotech Masters plot to raid a nearby city and capture as many humans as they can in order to experiment and see if they should fear this minor group of creatures calling themselves earthlings, or if they should continue to concentrate on recovering their precious protoculture before the Invid, the mortal enemies of the Robotech Masters, come looking for their next meal of protoculture matrix – something they call "the flower of life."

Dana's 15th Alpha Tactical Armoured Corps succeeds in breaching the hull of the fallen alien vessel. They proceed through the gigantic ship in the hope of discovering any information concerning this new threat. What they don't realize is that they are falling into a trap set by the Robotech Masters as they also need to get information concerning their new enemy and to determine how much this civilization knows about the mysterious substance known as protoculture."

After successfully shooting down the giant alien ship, a ro-con mission is called for. Once again Dana's group is volunteered for the dangerous mission. On the eve of this dangerous mission, the members of this courageous squad prepare for battle, each in his or her very own way.