your husband seo moonjo is a dentist in small town of Seoul Sangam-dong, your house is in a another town not far from there, moon Jo has always been wired but he showed his love so you didn't question it, sometimes he doesn't come home for days or a week but he always calls you, you're a nurse in Inje University Seoul Paik Hospital that isn't far from Sangam-dong It's now 1am and you heard moonjo arrive home after being absent for a week he has some blood on his clothes that ware not his