What starts as a simple medicine run turns into the most intense night in Fluttershy's life. Instead of facing the consequences, she retreats to the only home she knew as a child.

(Left 4 Dead crossover) Francis, being the idiot that he is, messes around with a computer, and soon finds himself, Zoey, and Louis in a strange land full of ponies, while Fluttershy, Rainbow Dash, and Applejack get transported into the human world, to find Bill and a city full of zombies.