The Earth is invaded by a race of aliens calling themselves the Invid. They have come to the Earth to cultivate its vast supplies of Protoculture, a multipurpose energy source and foodstuff, which is of prime importance to their race. Without Protoculture, the Invid Colony could wither and die. With enough, their race could grow and become the most powerful in the universe. Their invasion and conquest of the Earth is swift and complete. A huge interstellar fleet is sent to Earth by Admiral Rick Hunter to appraise the situation and test the strengths of this new alien ...
Scott Bernard, the sole survivor of the Robotech Expeditionary Force's ill-conceived attack against the Invid stronghold known as Reflex Point, joins forces with Rand, a young rebellious freedom fighter.
Scott, Rand and Annie, a precocious 13-year-old girl, try to help some citizens in a remote town fight off a gang of thugs and an attack by an Invid Scout Patrol. This episode introduces the cast to "Yellow Dancer.
The group of freedom fighters, now joined by Yellow Dancer (aka Lancer), Rook Bartley (a brave young woman) and Lunk (aka Jim Cooper), try getting back to nature as they set-up a base in the center of a hostile forest.
Lunk makes a slight detour to keep a promise made to a dying friend. He is not prepared for the reception he gets. He ends up fighting for his life, for the freedom of his friends, and the return of their stolen Robotech mecha.
Scott Bernard and his band of comrades come upon a force of Robotech Defense Forces under the command of one of his childhood heroes, Col. Wolfe. When Scott offers the services of his group to aid in Wolfe's plans to defeat the Invid,
Scott, Rand and Annie are separated from the group and find themselves in a Genesis Pit. It is an experimental lnvid Laboratory in which these strange aliens are conducting genetic experimentation on Earth biological history.
The Invid send a "simul-agent" into the midst of Scott Bernard and friends in order to find out how much this band of freedom fighters knows about them and their plans. The Invid plan backfires when Rand discovers the Simul-agent.
In order to continue on to Reflex Point, Scott Bernard and his friends must first destroy an old Robotech Fortress that is now occupied by the Invid. The group separates and infiltrates the complex and manages to destroy the Invid stronghold.
Rand tries to find water for Marlene who has grown ill following the destruction of the Invid Fortress. He braves a sandstorm that circulates many of the spores of the Invid Flower of Life that overwhelm Rand.
While traveling through a forest of mature trees that were once active Invid Flowers of Life, Scott Bernard's group is captured by a tribe of outcasts. They have canonized the Invid as their sacred protectors.
The Regiss, Queen of the Invid, allows two of her children to transform their protoplasmic bodies into humans as part of the process of finding the ultimate life form. Sera and Corg, take this opportunity to hunt down the humans.
On a snow-capped mountain pass, Scott Bernard and company defend themselves against a massive attack by the Invid, led by Sera, who is torn between her loyalty to the Regiss and her uncontrollable emotional instability.
The group finds themselves in a high desert ghost town populated by an assemblage of old timers who have Robotechnology. The return of the newest attack wing of the Robotech Defense Forces sends a call to glory into the lives of many.
The freedom fighters take a detour from their journey to Reflex Point, to explore a city preserved under a canopy of ice and snow. It's a time to replenish their food supplies, and morale, after suffering so much at the hands of the Invid
Dusty Ayres, a human who was used as an experimental subject by the Invid, has his mind set on revenge as he systematically goes about destroying those he feels responsible for his torture at the hands of the Invid.
Scott Bernard and his friends travel to a large urban center to replenish their dwindling supplies of protoculture and also try to get information regarding Reflex Point and the relative strength of the Invid.
The Robotech Defense Force is planning an attack against the Invid who have taken over the earth. There's a small battle over an advanced "steal-type" Alpha Fighter. Marlene is injured and it's discovered that she is an Invid.
The Robotech Defense Force plans its major attack on Reflex Point. Scott, Lancer and Lunk return to the military. Annie, Rand and Rook are told to stay away. They don't obey and blast their way into a final confrontation with Regiss.