Years after the events of Megazone 23 II, the only city on Earth is the supposedly idyllic Eden. There lives Eiji Takanaka, a B Level hacker who has just been accepted into EX, the organization that controls Eden. However, before his first day on the job, he becomes embroiled in a network war, a legendary figure named EVE, and a plot to re-inhabit the Earth.

Years after the events of Megazone 23 II, the only city on Earth is the supposedly idyllic Eden. There lives Eiji Takanaka, a B Level hacker who has just been accepted into EX, the organization that controls Eden. However, before his first day on the job, he becomes embroiled in a network war, a legendary figure named EVE, and a plot to re-inhabit the Earth.

Its central characters are a vampire girl named Miyu and her demonic companion Larva. Miyu is the daughter of both a human and a shinma (demon) and as such she was awakened as the guardian whose destiny is to hunt down all stray shinma and send them back to the darkness.

A young biker stumbles onto a prototype motorcycle with a hidden function that has a link to the true nature of his world.

YAHAGI Shōgo is a young man living in Tokyo in the mid-80s, enjoying life during a period of unprecedented peace and prosperity. Or so he thinks... In reality he, and everyone he knows, are living in a carefully maintained illusion. Almost all are blissfully unaware that they are aboard a massive spaceship, Megazone 23. Only a few of the inhabitants of Megazone 23 know the truth -- that not only is the city a ship, but that it is controlled by Bahamut, an AI, and is in danger of attack from the mysterious Dezalg. When Shōgo stumbles upon the secret of Megazone 23, the military decides that he and his friends need to be silenced before they can interfere with their plans to hack Bahamut. Shōgo only has two things going for him – a motorcycle that is much more than it seems, and an acquaintance who is much less so!

YAHAGI Shōgo is a young man living in Tokyo in the mid-80s, enjoying life during a period of unprecedented peace and prosperity. Or so he thinks... In reality he, and everyone he knows, are living in a carefully maintained illusion. Almost all are blissfully unaware that they are aboard a massive spaceship, Megazone 23. Only a few of the inhabitants of Megazone 23 know the truth -- that not only is the city a ship, but that it is controlled by Bahamut, an AI, and is in danger of attack from the mysterious Dezalg. When Shōgo stumbles upon the secret of Megazone 23, the military decides that he and his friends need to be silenced before they can interfere with their plans to hack Bahamut. Shōgo only has two things going for him – a motorcycle that is much more than it seems, and an acquaintance who is much less so!