"Armored Trooper Votoms: Phantom Arc" is a four-episode OVA series set in the "Armored Trooper Votoms" universe, serving as a sequel to the original 1983 anime. The story takes place on the planet Sunsa, where Chirico Cuvie, the protagonist, finds himself embroiled in a new conflict. Chirico, a former soldier and skilled AT (Armored Trooper) pilot, is drawn into a mission to rescue a woman named Fyana, who possesses advanced PS (Perfect Soldier) abilities. Fyana has been captured by the secretive Balarant Union, which seeks to exploit her unique genetic enhancements for military purposes.

The narrative unfolds as Chirico allies with a group of mercenaries, including Vanilla, Gotho, and Coconna, who assist him in infiltrating Balarant facilities. The group faces numerous challenges, including heavily fortified defenses, rival factions, and the enigmatic Phantom Arc, a powerful and experimental AT prototype. Chirico's determination to save Fyana drives the plot forward, highlighting his resilience and tactical prowess. The series explores themes of loyalty, sacrifice, and the consequences of advanced military technology.

The OVA maintains a focus on intense mecha battles, strategic warfare, and the moral ambiguities of war. Chirico's character remains central, with his stoic demeanor and combat expertise serving as key elements of the story. The supporting cast, including the mercenaries and Balarant operatives, adds depth to the narrative, providing both camaraderie and conflict. The series concludes with a resolution to Chirico's immediate mission, while leaving broader questions about the future of the Votoms universe open-ended. The OVA is noted for its adherence to the gritty, realistic tone of the original series, emphasizing tactical combat and character-driven storytelling.