Jae Bak is a 40'ish man who has become burned out by work and his family. He works as a sales manager for a publishing company. The highlight of Jae Baek's day is now when he steals a glance at beautiful young Yu Hee every morning as she stands waiting for the subway, while sucking a red lollipop. For the next 100 days, Jae Baek watches Yu Hee and then finally meets Yu Hee. At a bookstore, Jae Baek meets Yu Hee. Jae Baek follows Yu Hee to her home.
On a beach, under a fiery sunset, the couple kiss. They both have feelings for each other, but Jae Baek starts to hear ruthless rumours about her.