Due to disputes over neighboring territories, countries M and L have been at war. The two countries have suffered heavy casualties, which has intensified the grievances between the two countries. Ino was ordered to defeat country M. After the war. In the evening, Ino was walking by the enemy's lake and saw a beautiful girl combing her hair by the lake, looking holy in the moonlight. Ino concealed his identity and got acquainted with the girl. They met again and again by the lake, and the two fell in love. When their identities are revealed, can they still be together, and can they resolve the grievances between the two countries? What secret is hidden?