August 12, 1827, London. A frame. A work of art whose creator insists on frantically ending in the dim light of his room. Suddenly, something moves in the shadows. An intense darkness invades everything. That would be the last creation of William Blake. Professor Peter White, previously loved and admired by everyone, lives locked up in his office. His daughter Rachel is the only one who suffers from his increasingly strange attitude. Rachel is a young woman with exceptional intelligence, fascinated by the world of art and the occult. Since she was little, her parents taught her to find and decipher the little hidden messages in great works of art. Together with her friend Andrew she has a radio program on the internet, in which they collect and analyze paranormal testimonies and experiences from beyond. During one of these sessions, Rachel receives a message that makes her blood run cold: "The mouth is opening. Find the key. That same night, her father dies under strange circumstances. From that moment, Rachel must find out what her father was up to, putting into practice everything she learned since childhood to decipher a series of devilish clues. They all seem to revolve around the enigmatic painter William Blake and her prophecies about the fallen angel. But Rachel will not be alone in this frantic search. She will be accompanied by Nick, an old and loyal friend, and the mysterious Albion, to whom she has been irretrievably attracted since he bursts into her life.
