"Legend of the Galactic Heroes: Overture to a New War" serves as a prequel and recap film to the main "Legend of the Galactic Heroes" series, focusing on the early stages of the conflict between the Galactic Empire and the Free Planets Alliance. The narrative centers on the strategic and political tensions that escalate into full-scale war, highlighting the key figures who shape the course of history. The story begins with the Galactic Empire, ruled by the authoritarian Goldenbaum Dynasty, facing internal dissent and external threats from the Free Planets Alliance, a democratic faction seeking independence. Reinhard von Lohengramm, a rising star within the Empire, emerges as a central figure, driven by ambition and a desire to reform the corrupt regime. His close friend, Siegfried Kircheis, serves as his loyal confidant and strategist. On the opposing side, Yang Wen-li, a brilliant but reluctant military tactician, leads the Alliance forces, advocating for peace while excelling in warfare. The plot revolves around the Battle of Astarte, a pivotal engagement that showcases the tactical genius of both Reinhard and Yang. Reinhard devises a bold plan to outmaneuver the Alliance fleet, demonstrating his growing reputation as a military prodigy. Yang, despite being outnumbered and outgunned, employs unconventional strategies to mitigate losses and challenge the Empire's dominance. The battle underscores the ideological and personal contrasts between the two commanders, setting the stage for their ongoing rivalry. Political intrigue also plays a significant role, as factions within both the Empire and the Alliance vie for power. Reinhard navigates the treacherous court politics of the Empire, leveraging his influence to advance his goals. Meanwhile, Yang grapples with the moral complexities of war and the limitations of democracy within the Alliance. The film explores themes of leadership, loyalty, and the cost of ambition, providing a foundation for the broader narrative of the series. "Overture to a New War" effectively condenses the early arcs of the main series while introducing new scenes and expanded details, offering both a recap for existing fans and an accessible entry point for newcomers. The film maintains a focus on the strategic and human elements of the conflict, emphasizing the interplay between individual decisions and large-scale historical events.