In the vibrant, multicultural city of Istanbul, a young historian named Mehmet discovers a hidden chamber within the Hagia Sophia. The chamber contains ancient scrolls that detail a secret society known as the 'Guardians of the Veil', who possess the ability to control time itself. Mehmet must unravel the secrets of the scrolls and confront the Guardians, who are determined to use their power to reshape history, all while navigating the treacherous political landscape of Istanbul.