"Chiisana Kyōjin Microman: Daigekisen! Microman VS Saikyō Senshi Gorgon" is a science fiction anime series centered around the conflict between two factions of microscopic humanoid beings, the Microman and the Gorgon. The Microman are a peaceful, technologically advanced race who inhabit a hidden world within Earth, coexisting secretly with humans. In contrast, the Gorgon are a warlike faction seeking to conquer both the Microman and the human world, driven by a desire for power and domination.

The narrative begins with the Gorgon launching a sudden and aggressive invasion of the Microman's homeland, forcing the Microman to defend themselves. The Microman, though small in stature, possess advanced technology and weaponry, which they use to combat the Gorgon's superior numbers and brute strength. The conflict escalates as the Gorgon deploy their most formidable warriors, including their leader, who is determined to crush the Microman resistance.

Central to the story are the Microman's efforts to protect their world and prevent the Gorgon from expanding their conquest to Earth. The Microman form alliances with a group of humans who become aware of their existence, creating a unique dynamic between the two species. These humans play a crucial role in aiding the Microman, leveraging their own ingenuity and resources to support the fight against the Gorgon.

The series explores themes of unity, resilience, and the struggle against overwhelming odds. The Microman, despite their size, demonstrate remarkable courage and determination, embodying the idea that strength is not solely defined by physical power. The Gorgon, on the other hand, represent the dangers of unchecked ambition and the destructive consequences of war.

Key characters include the Microman leader, who serves as a symbol of hope and strategic brilliance, and the Gorgon commander, whose ruthless tactics and unwavering resolve make him a formidable adversary. The human allies add depth to the narrative, highlighting the potential for cooperation between different species in the face of a common threat.

The plot is driven by a series of intense battles, strategic maneuvers, and moments of personal sacrifice, culminating in a climactic showdown between the Microman and the Gorgon. The outcome of this conflict determines the fate of both the Microman's world and the human world, underscoring the high stakes of the struggle. The series balances action with moments of introspection, providing a well-rounded exploration of its central conflict and the characters involved.