Seungmin used to have a crush on his high school teacher. Maybe he still has some fantasies about her. So what? A fantasy is just a fantasy. High school was ages ago, and he has a girlfriend thatâ€™ll marry him in a few months. Thatâ€™s his reality. But fantasy collides with reality when he meets his old high school teacher at a reunion and accidentally takes her phone instead of his own. The photos on that phone show him thereâ€™s more to Mrs. Jang than heâ€™s ever dreamed about, and that he just might get to indulge in his old teenage fantasies after all.