Derek Walker lost his grandfather at the dawn of the zombie apocalypse in Portstown.  As he ruffled through his Opa’s belongings, he uncovered a family secret going back generations.  The puzzles hidden in his grandfather’s documents proved to be the key to unraveling the mystery of the outbreak and surviving its deadly horrors. 

Now alone in Miami, Derek must once again put the pieces of the past together to prvent the outbreak from spreading once again…