On ancient ground, at the edge of the world, an evil born in heaven is about to be unleashed on earth.
The angel Gabriel comes to Earth to collect a soul which will end the stalemated war in Heaven, and only a former priest and a little girl can stop him.
John Constantine has literally been to Hell and back. When he teams up with a policewoman to solve the mysterious suicide of her twin sister, their investigation takes them through the world of demons and angels that exists beneath the landscape of contemporary Los Angeles.
When God loses faith in humankind, he sends his legion of angels to bring on the Apocalypse. Humanity's only hope for survival lies in a group of strangers trapped in an out-of-the-way, desert diner with the Archangel Michael.
Santa Claus is actually a demon who lost a bet with an angel, so he became the giver of toys and happiness. But this year the bet is off, and Santa is about to return to his evil ways.
In Bucharest, Allison is protecting the mysterious bible, "The Prophet Lexicon", where the last chapter about the apocalypse, called Revelations, discloses the name of the Antichrist in its last page. Meanwhile, the evil and jealous leader of the renegade angels Thrones, Stark, forces the hit-man Dylan to kill Allison to get the information about the Antichrist, but Dylan mysteriously feels attracted by the woman, protecting her against the Thrones. Allison seeks John Reigart for help, but Satan tell her that he is interested in the apocalypse to gather millions of souls to Hell. Alone and betrayed, Allison discloses the truth about her origins, while protecting the Lexicon.
Gabriel tells the story of an archangel who fights to bring light back to purgatory - a place where darkness rules - and save the souls of the city's inhabitants.