V remote mountain village pod watchful očimi dvoch kamenných guardians, mladé Yuru contentedly lives off pozemku pri cestovaní zblízka to len family he left—Asa, jeho hotový twin sister. Asa, meanwhile, carries out a mysterious “duty” na behalf z dediny pri zámku. Why is Asa a prisoner? And what other secrets does Yuru's otherwise idyllic home hide?