According to the story Alexander the Great arrives at the gates of the city of Halicarnassus. Princess Ada who rules the city goes to talk to him and prevent him from taking over Halicarnassus. Ada is a very good speaker and politician. Her success is heard all over the world. 

Impressed by this story they heard in the museum Zeynep and Emir examine the stone relief depicting the conversation and they discover something. The person in the relief who is supposed to be Princess Ada is not her. How could no one notice the strangeness of her feet? 
Zeynep and Emir pursue their suspicions and embark on a historical journey with the hope that maybe the kingdom and the mysterious tomb of King Hekatomnos will be opened. But first they need to find out where they are because they get lost. And things get complicated...