It all started with the fact that at some point the Earth found itself in incredible danger, such as it had never experienced in its history. Many predicted that the end of the world would come, and this would lead to serious problems that could not be fixed by humans. It seemed that this end of the world had already been completely resolved, but at the most crucial moment, the angel Aziraphale and the demon Crowley appeared, who decided that they needed to try to deal with the impending danger at any cost.