Welcome to the future, where the norms are vast bio-constructed cities, air toxic enough to force citizens to wear oxygen masks, and crime so severe that the cops drive tanks! When a mysterious winged girl with the power to cleanse the poisoned air is kidnapped by the villainous Buaku, police mini-tank commander Leona Ozaki, her tank Bonaparte, and her lovesick partner Al must confront the arch-criminal and his catgirl molls-the beautiful and deadly Annapuma and Unipuma-before Buaku's master plan kicks into gear. Buaku has more than money on his mind, and the future fate of humanity hangs in the balance!

Neji and his fiancé were killed after getting caught up in an unfortunate kidnapping situation. After being cryogenically frozen by the GERA, the ESP research facility, for 40 years, Neji wakes up. It doesn’t take long for the GERA to discover Neji’s extremely powerful and unnatural powers and to make him into one of their mercenaries. However, Neji finds out his fiancé will be used as a guinea pig for the research facility's medical research and desperately tries to escape. In the second part, Neji encounters his nephew, who is also created from GERA and both begin on their journey through the future where human-like robots are used as slaves.