In the 23rd Century, following the Leviathan War, humans have been defeated by the Colossius, a humanoid alien species with a deep-seated hatred for other races. These aliens have taken control of Earth and subjugated its people. In a final bid to resist, humanity has created a group of enhanced fighters called Agents. To transform into an Agent, individuals must pass a series of rigorous tests to demonstrate their power. This narrative focuses on the tale of the one who managed to escape.