"Tytania" is a space opera anime set in a distant future where humanity has expanded across the galaxy, forming a vast interstellar empire. The story revolves around the Tytania clan, a powerful aristocratic family that dominates the galaxy through military might and political influence. The Tytanians are led by the ambitious and ruthless Duke Ariabart Tytania, who seeks to maintain the family's supremacy by crushing any opposition. Their dominance is challenged by a young and resourceful military commander, Fan Hyulick, who becomes a symbol of resistance against their tyranny.

Fan Hyulick, a former officer of the Euranian military, emerges as a key figure after surviving a battle against the Tytania fleet. His tactical brilliance and unyielding determination earn him the nickname "The Hero of Euranis." As he gathers allies and resources, Fan becomes a thorn in the side of the Tytania clan, orchestrating daring strategies to undermine their control. His actions inspire others to join the fight against the oppressive regime, leading to a series of escalating conflicts across the galaxy.

The Tytania clan itself is a complex web of ambition and intrigue. Duke Ariabart Tytania, while a formidable leader, faces internal challenges from his siblings and relatives, each vying for power and influence within the family. This internal strife occasionally weakens their ability to respond to external threats, creating opportunities for their enemies. Other notable members of the clan include Idris Tytania, a cunning and manipulative strategist, and Jouslain Tytania, a more pragmatic and level-headed figure who often clashes with his more aggressive relatives.

The narrative explores themes of power, loyalty, and rebellion, as the struggle between the Tytania clan and their adversaries unfolds across multiple star systems. The series delves into the political machinations of the Tytania family, their military campaigns, and the growing resistance movement led by Fan Hyulick. The story balances large-scale space battles with personal conflicts, highlighting the motivations and struggles of key characters on both sides of the conflict.

As the series progresses, the balance of power shifts unpredictably, with alliances forming and dissolving in the face of shifting loyalties and strategic necessities. The fate of the galaxy hangs in the balance as the Tytania clan fights to maintain their dominance, while Fan Hyulick and his allies strive to dismantle their oppressive rule. The story concludes with an open-ended resolution, leaving the ultimate outcome of the conflict to the viewer's interpretation.