Eun-ho disappears and no one can get in touch with her for a month. Joo-yeon has been looking for Eun-ho so he even looks up Hyun-oh on the Internet and goes all the way to PPS to ask him about Eun-ho's whereabouts. He tells Hyun-oh he is dating Hye-ri, Eun-ho's other personality. Hyun-oh is utterly shocked to find out that Eun-ho is suffering from dissociative identity disorder.