Do Hyun Woo (Lee Sun Kyun) is a man who has a pretty decent career, having been working as a PD for the last 10 years, as well as a pretty wife, Jung Soo Yun (Song Ji Hyo). His life reaches a crisis point when he starts to suspect that his wife might be having an affair. Do Hyun Woo wants to save his marriage, but because he’s too embarrassed to talk to his friends and relatives about his wife’s affair, he starts to ask strangers on the Internet what should he do to overcome this obstacle.