Journey to Castle Ehb

Journey to Castle Ehb is a main quest in the Chapter VII of .
Talk with Nonataya at the Droog village and she will inform you that the Castle Ehb is besieged by the Seck people and you must reach it so that you can prevent the Seck from capturing the secret chamber of the castle. The secret chamber is no other than the Chamber of Stars and it is the key from which the Seck to unleash their full destructive power. 
All you have to do to complete this quest is reach the entrance of the castle. But be prepared to find strong resistance along the way.