Katlyn finds herself torn between life and death, floating in the limbo between being awake and being asleep, after being struck by a curse in the midst of the Battle of Hogwarts during her final year at the prestigious school. As her mind finds itself trapped in the grey, she begins to reminisce about all the moments- from her first year to final seconds- that led her here.

When the dead begin to rise and start eating other people, Jess and her friends are less than prepared for the danger they are in from both the monsters they call 'Walkers' and other survivors.