The undead have taken over the streets of Chicago while Robin Briggs slept. Unaware of the changing world, he starts his day only to find himself trapped on the eleventh floor of his apartment building. Through his windows he sees the world go to hell as the world famous Navy Pier is overrun with the dead. But he's not alone. There's something on the eleventh floor with him. Walking the halls and in the other apartments. Is Robin is the last of the living? Will he survive what's beyond the door to his apartment? Or will he succumb to the teeth of the dead?