Niris, an angel in his twenties, goes to the ceremony of the year in Yerpena, the capital of the demons. The prince Seiran is indeed going to become crown prince, and all the beautiful world of the intergalaxy will be at the reception! But the angel is not really coming for the same reason as everyone else... he has a secret mission that he must accomplish during the ceremony and on which the lives of many angels depend. Will he be able to lift the veil on the traffic he is trying to uncover?
"Since the Apocalypse had been avoided, the bond between the angel and the demon had grown closer. For the first time in 6000 years Aziraphale...felt something for Crowley. He didn't know what the strange feeling was when the ginger-haired demon was around, but - he was an angel, for Gods Sake. His kind used to be caring and loving, whatever or whenever."
Aziraphale begins to question the Great Plan and its purpose on love. According to this, a demon and an angel aren't made for each other. When Crowley finally shows up at his bookshop and tries to confess his feelings for the angel, he breaks up. Leaving an angry demon and a very sad angel. Not knowing what they gonna do.
Little do both of them know that these weren't exactly the commands from God herself...