Alec Lightwood, a history professor visits a small bookstore one day to escape his busy life. The store is run by Asmodeus Bane, who has his only son magnus who spend mostly his time in there when he meet magnus he feels a strange connection to Magnus, while Magnus is drawn to Alec, though neither knows the truth. As they spend more time together, their bond grows, and they slowly uncover a deep connection from a past life, destined to bring them together again.