"Super Robot Wars OG: Divine Wars" is a 26-episode anime series based on the "Original Generation" (OG) storyline from the "Super Robot Wars" franchise. The narrative unfolds in a world where humanity faces threats from extraterrestrial forces and rogue factions. The Earth Federation Government establishes the Earth Federation Army to combat these dangers, with a focus on developing advanced humanoid weapons known as Personal Troopers (PTs). The story primarily revolves around the conflict between the Earth Federation and the Divine Crusaders, a rogue military organization seeking to overthrow the government.

The protagonist, Ryusei Date, is a young mecha enthusiast and skilled pilot who becomes involved in the conflict after encountering the Huckebein, a prototype PT developed by the Earth Federation. Alongside Ryusei, the series features a diverse cast of characters, including Kyosuke Nanbu, a calm and composed pilot with a strong sense of duty, and Excellen Browning, a cheerful and skilled marksman. These characters form the core of the SRX Team, a specialized unit tasked with piloting advanced mechs to combat the Divine Crusaders and their powerful machines, such as the Granzon and the Valsione.

The Divine Crusaders, led by Bian Zoldark, aim to use their advanced technology to create a new world order, believing that humanity must evolve to survive. Their motivations are rooted in a desire to prevent humanity's self-destruction, but their methods involve widespread destruction and conflict. As the SRX Team battles the Divine Crusaders, they uncover deeper conspiracies, including the involvement of extraterrestrial forces known as the Aerogaters, who pose an even greater threat to humanity.

The series explores themes of loyalty, sacrifice, and the ethical implications of advanced technology. The characters grapple with their roles in the conflict, questioning the morality of their actions and the consequences of their decisions. The narrative builds toward a climactic confrontation between the SRX Team and the Divine Crusaders, culminating in a battle that determines the fate of humanity. Throughout the series, the interplay between personal relationships and large-scale conflict drives the story, with character development intertwined with the progression of the war.