While working on his novel, an author discovers a mysterious girl in his garden. Is she real or imaginary? Despite this uncertainty, he delves into the girl's world.

A top secret mission for French Intelligence brings Indy to Istanbul during the first world war. Exploring the city's dark and dangerous streets, he is thrust into a web of betrayal and murder when he discovers a vile Turkish plot to assassinate French espionage agents. Evil of a more enduring kind awaits him in Transylvania where he engages in a mortal combat with bloodthirsty Vlad the Impaler and his horrific army of the living dead. With his life at stake, Indy must garner all his strength and wits in order to defeat the fiend and save mankind.