A kid who just wants to ride his bike gets dragged back into a war he never asked for because doing nothing makes him complicit. The real enemy isn't the alien invaders, it's the government that weaponizes a city's entire population and calls it defense. By the time you realize Shogo can't go home again, the show has already dismantled every comfortable lie you believed in the first OVA.
An alien armada strikes at humanity's last refuge, a massive orbital cylinder hiding beneath layers of artificial sky. Shogo tries to reclaim his normal life among his biker friends, but the sentient computer EVE pulls him back into conflict when she reveals a buried weapon: the Garland, a bike capable of piercing reality itself. His rival B.D. commands the military forces defending Megazone 23, yet their real agenda involves seizing control of EVE to weaponize the station for unlimited development. As the Dezalg press their assault and internal factions clash over power, Shogo realizes the threat runs deeper than any external invasion. EVE guards a final secret called A.D.A.M., something so destructive it could erase everyone within the cylinder. Caught between his desire for peace and the impossible choices demanded by war, Shogo must confront whether salvation requires becoming a weapon himself. The action explodes across the hidden city's futuristic landscape, where motorcycle chases and mecha combat collide with intimate moments of doubt and connection. This chapter forces every faction toward a convergence point where survival itself becomes uncertain.