"Document Taiyou no Kiba Dougram" is a 75-episode mecha anime series set in a futuristic world where political intrigue, rebellion, and warfare dominate the narrative. The story unfolds on the planet Deloyer, a colony under the control of Earth's Federation. The Federation exploits Deloyer's resources, leading to widespread discontent among the colonists. The protagonist, Crinn Cashim, is the son of Donan Cashim, the governor of Deloyer and a key figure in the Federation's oppressive regime. Crinn initially lives a privileged life but becomes disillusioned after witnessing the suffering of the colonists and the corruption within the Federation.

Crinn's transformation begins when he encounters the Dougram, a powerful combat armor developed by his father's forces. He steals the Dougram and joins the Deloyeran resistance, led by the charismatic guerrilla leader, Rocky. The resistance, known as the Deloyer Liberation Front, fights to overthrow the Federation's control and achieve independence for Deloyer. Crinn's decision to defect places him in direct opposition to his father, creating a central conflict that drives much of the series' emotional tension.

The narrative explores the complexities of war, loyalty, and morality as Crinn and his comrades navigate the challenges of guerrilla warfare. The resistance faces numerous obstacles, including the Federation's superior military technology and internal divisions within their ranks. Key characters include Chico, a skilled mechanic and strategist; Royle, a former Federation soldier who joins the resistance; and Fang, a determined fighter with a personal vendetta against the Federation. Each character contributes to the group's efforts, highlighting the diverse motivations and backgrounds of those fighting for Deloyer's freedom.

As the conflict escalates, the series delves into the political machinations behind the war. The Federation's leadership, including Donan Cashim, employs ruthless tactics to maintain control, while factions within the resistance debate the best path to victory. The Dougram itself becomes a symbol of hope for the colonists, representing their struggle against oppression. The series balances large-scale battles with intimate character moments, emphasizing the human cost of war and the personal sacrifices made by those involved.

The story progresses through a series of strategic victories and setbacks for the resistance, culminating in a climactic confrontation between Crinn and his father. The resolution of their conflict reflects the broader themes of the series, exploring the possibility of reconciliation and the enduring impact of war on individuals and societies. "Document Taiyou no Kiba Dougram" is a grounded and thought-provoking mecha series that combines political drama, military strategy, and personal growth, offering a nuanced portrayal of rebellion and its consequences.