Dr. Rin Saeki was supposed to be a rising star in the world of experimental science.
Instead, she’s now a convicted criminal and locked away for reasons no one dares to speak aloud.

All she did was look for her missing husband.
All she wanted were answers.

They told her to forget him.
They told her to stop asking questions.

Then the world began to end.

Outside, cities are collapsing, people are turning into something inhuman, and no one knows why.
Inside the crumbling prison walls, Rin discovers something even more terrifying...

She’s pregnant.

With the world falling apart and danger closing in from all sides, Rin must fight to survive.
But as the infection spreads…
And strange things begin happening around her…
One question haunts her more than anything else:

Where is her husband?

And why does it feel like… something is still watching her?

Surviving Doomsday… From Inside a Prison?!