"Gall Force: The Revolution" is a two-part OVA series set in the broader "Gall Force" universe, continuing the saga of interstellar conflict between the Paranoids, a machine race, and the Solnoids, a humanoid race. The story unfolds in a post-apocalyptic setting where Earth has been devastated by war, and remnants of humanity struggle to survive. The narrative centers on a group of genetically engineered soldiers known as the Star Leaf, who are tasked with protecting humanity's last hope for survival.

The first part, "The Revolution: Chapter One," introduces the Star Leaf team as they embark on a mission to retrieve a powerful artifact known as the "Mother Brain," which holds the key to humanity's survival. The team faces relentless attacks from the Paranoids, who seek to destroy the artifact and eliminate any remaining human resistance. Amidst the chaos, the Star Leaf members grapple with their own identities and the moral implications of their mission, as they are not fully human but rather bio-engineered beings created for war.

In the second part, "The Revolution: Chapter Two," the Star Leaf team confronts the true nature of the Mother Brain and its connection to the Paranoids. The artifact is revealed to be a sentient entity capable of manipulating both humans and machines, raising questions about the ethics of using such power. As the team battles the Paranoids and uncovers the secrets of the Mother Brain, they must decide whether to destroy it or use it to ensure humanity's survival, even at the risk of perpetuating the cycle of war.

The main characters include Lufy, the determined and resourceful leader of the Star Leaf team; Rabby, a skilled pilot with a strong sense of justice; and Pony, a young and inexperienced member who grows into her role as a soldier. Each character brings unique skills and perspectives to the team, contributing to the dynamic interplay of personalities and decisions that drive the narrative forward. The series explores themes of identity, sacrifice, and the consequences of technological advancement, set against the backdrop of a relentless interstellar conflict.