Yeon-woo 24 working in the post office of a small town. MS is the most beautiful age of life except that she shy, introspective and naive, never thought that I would hold hands a certain guy this lifetime. One day, she accidentally discovered a mysterious letter with analog content type. Curious, she tracked a day to day and find out it was a boy named In-gyu. She loves him like his first love, but then he’s struck by lightning has a wife and some kids. Sky like collapse. Members of her family tried every way to help her, including the most filthy disgusting game.