Kim Soo-jin, the woman who opened my eyes to the castle! But as soon as she enlisted, she put her rubber shoes upside downâ€¦ And with the huge US Army..!! She canâ€™t forget her hot night with him. Suddenly, he became the troublemaker of his unit and a soldier of interest. Then one day, So-Heeâ€™s older sister, whom she had a crush on when she was young, began to visit her. Became her older brotherâ€™s girlfriendâ€¦ !!