Hana, a daughter of the psychotherapist, and her family had a terrible accident 5 years ago which left her father's right leg disabled, her mother in coma and her little sister with the serious facial burns. Hana was miraculously unharmed, however the accident caused her the deep emotional scars. One day she meets Jun Shii , a high schooler who is searching for an answer to his mother's mental illness, and they slowly open themselves to each other. Shortly after, Hana's father brings her mother home out of blue. "The miracle has happened!" Her father enjoys the happy family moment for the first time in the last 5 years, but Hana only becomes very anxious. "She can't be my mother...who is she?"