When a young architect stumbles upon an abandoned courtyard in The City of Echoes, she discovers a chilling secret that intertwines her past with the city's dark history....

As night falls over the ancient streets of Zhengzhou, a mysterious luminous tombstone draws the attention of an unsuspecting young couple, leading them on a harrowing journey into the depths of the city's dark past....

A young historian's quest to uncover the truth behind the eerie whispers of Palatine Hill leads her down a chilling path through the ancient streets of Rome, where the past and the present intertwine in a chilling tale of unrequited love and tragedy....