Story Ideas: The Forth Prince Of The Apocalypse INF

This is just an idea, it can be used by other people to make something original, I'm not a good writer and don't have time to write stories. feel free to use.
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The Apocalypse, an event involving destruction on a catastrophic scale, involved a Virus believed to be a work of fiction. In 2020, a Virus from a extra-terrestrial source spread globally, infecting the earths populace.

The Queen, the only living and breathing survivor after the extermination of her people came across Earth, a pre space age world, primitive in her eyes, and released a Virus upon it, carrying the genetic code of individuals from her species, to find and use bodies of the infected who were found compatible as hosts to revive her people, those who were not, turned into mindless drones, that would spread the virus through a bite, the Human's left would call these 'Zombies', identifiable by the decomposing skin and red pupils.

Those that were compatible, would become hosts, and after using the DNA within the virus to improve themselves within a few months to become deadly combatants, such as those from wuxia stories, would lead their drone (Zombie) armies, against Mankind's last Strongholds to identify and infect all those that may host their brethren.

But Humankind would not fall just yet, some Human's from the initial infection were able to survive the virus, although not fully immune, with a second dose of the virus entering the body through something like a bite having the chance of them turning, 20% of the earth's populace could fall under this group, usually common in families, but even more importantly, some were even able to go further and devour the DNA within the virus and evolve, growing in strength everyday, they were able to fight on equal grounds against the host, although less than 5% of the humans were able to do this.

With a bit less than 25% of the human population left, against more then 5 billion zombies and some hosts. How will the conflict escalate and will mankind survive.

But most important for this story, is the story of the Forth Prince, and his host.