Park Jaehyun (OC) is married to Kim Seolhyun. Park Jaehyun works for a famous CF company and a composer and producer with his friend Kim Daehyun (OC). What Park Jaehyun doesn't know that Kim Seolhyun is cheating on him. He just let's it go, he thinks Woo Jiho is just Kim Seolhyun's 'special' friend. But one day he couldn't handle it....  Will they ever get back together? Or will they take their separate ways? "I can't believe she doesn't remember... I am her husband."