It is the year of 2014, Shibuya is independent from Japan, and it becomes an independent nation. It is a town of chaos where only young people are living. The life necessity, such as electricity, water, and food are transported by the pipelines out from the Shibuya. The pipelines are running like cobweb in the sky, the young people in Shibuya looked like bugs trapped in the cobweb. In this city, there are people called "Prayers". They earn money by the battle of music. They turn music into electric signals and inject them into brains, and destroy opponents' mind and bodies each others. Originally created as 4-episode-OVA, it was canceled after 2 episodes.

A hundred years after Earth is invaded by aliens, the last remnants of the human race dwell in underwater "Aqua Bases." A team of five cybernetically enhanced women is trained for the purpose of carrying out guerilla attacks against the occupying forces. Earth's last hope for salvation is...Voogie's Angels.

Long ago, alien lifeforms came to Earth, fusing with people on the planet. Due to their appearance, they were dubbed "Mecha-ude," as when fused, they bore a striking resemblance to mechanized limbs. Through an involuntary partnership, average middle schooler Hikaru Amatsuga works alongside the Mecha-ude Arma, who is an extremely rare and special existence. To protect Arma, the resistance group ARMS assigns the dual Mecha-ude user Aki Murasame to follow him wherever he goes. However, she is also looking for a mysterious Snake-Type Mecha-ude wielder, who has put many of her comrades in a critical state. Behind the scenes, an organization known as the Kagami Group is searching for the mythical "Trigger Arm," a Mecha-ude said to grant unlimited power. When Aki's life is threatened by this group, Hikaru must team up with Arma to find the courage to fight back and, along the way, learn that his life will never be ordinary again.

Ten years ago, the villainous scientist Dr. Hell led his wicked followers, known as the Underground Empire, in a struggle to destroy all of humanity. It was against these forces that the young hero Kouji Kabuto fought, piloting the legendary super robot "Mazinger Z." Kouji's victory stopped Dr. Hell's evil plan and returned peace to the Earth. Now Kouji has left the pilot seat behind and become a scientist in his own right, following in his father's and grandfather's footsteps. Yet an unexpected encounter deep under Mt. Fuji triggers an even greater threat to mankind than ever before and alters Kouji's destiny forever. With humanity's fate in their hands, Kouji and Mazinger Z face a choice between good... and evil.