Seong Hye-sung, who has face blindness, visits a skincare salon when he's stressed. When the employee tells him about Kwon Yun-seul's love blog, he starts reading it, and they exchange comments. They end up meeting and start having feelings for each other. However, Yun-seul is offered to have her blog posts published as books, but it being about her ex-boyfriend puts her current relationship at risk...