The Vacant Library

How long does it take, before you become the very demon you had raged a war against?

Ansh, a young man finding refuge in the smell of blood, pleading for death and life in the same sentence. Grieving over Tara, his wife who's skin was laced with fire, burning bright enough to turn their lives into ashes. 

Apeksha, a girl looking desperately for the lost pieces of a puzzle called life, craving for an autumn twilight.
 
A diary with letters of love, confessions of guilt, a dark secret. 
What happens when they all coincide in the Vacant library?