"Dangaioh" is a three-episode OVA series that revolves around a group of four individuals with psychic abilities who are abducted by a mysterious scientist named Dr. Tarsan. Each of the four—Mia Alice, Roll Kran, Lamba Nom, and Pai Thunder—possesses unique psychic powers, such as telekinesis, teleportation, and energy manipulation. Dr. Tarsan experiments on them, enhancing their abilities and implanting false memories to prepare them for combat. They are then placed aboard the advanced mecha Dangaioh, a massive battleship capable of transforming into a humanoid robot.

The group is thrust into a conflict against the evil forces of Gil Berg, a tyrannical warlord seeking to conquer the universe. Gil Berg's army, equipped with powerful mecha and advanced technology, poses a significant threat. The protagonists must learn to work together, overcoming their fragmented memories and personal struggles, to pilot Dangaioh effectively. The mecha itself is a formidable weapon, combining the individual psychic energies of its pilots to unleash devastating attacks.

As the series progresses, the characters confront their pasts and the truth behind their abduction. Mia Alice, the de facto leader, grapples with her role and the weight of responsibility. Roll Kran, the hot-headed pilot, struggles with his impulsive nature. Lamba Nom, the calm and analytical member, provides strategic insight, while Pai Thunder, the youngest, brings emotional depth and vulnerability to the group. Their dynamic evolves as they face increasingly dangerous adversaries, culminating in a climactic battle against Gil Berg's forces.

The narrative explores themes of identity, trust, and the ethical implications of genetic experimentation. The series balances action-packed mecha battles with moments of introspection, as the characters question their purpose and the morality of their creation. Despite its short runtime, "Dangaioh" delivers a concise yet engaging story, blending science fiction elements with character-driven drama. The series concludes with a resolution to the immediate conflict, though it leaves room for further exploration of its universe and characters.