Two romantically linked archaeologists, Andy Scott and Kian Hunter, arrive at Edinburgh University to visit their best friend, Bridgette Sanderson. Upon arrival, they become prime suspects in her murder. Determined to prove their innocence, they find themselves in a dangerous quest to uncover hidden Knight Templar treasures, all while evading a mysterious sect. Along the way, Kian's ability of premonition is manipulated, and the intense search strains her relationship with Andy, who becomes drawn to Rowen, a young historian with her own secrets. As they uncover centuries-old riddles and secrets, they realize the stakes are far higher than they imagined-leading to revelations that will change their lives forever.