Lee Ji Eun (IU) is the daughter of a psychiatrist. After 10 years she returns to Korea to treat the son of her father's last patient, Mr Min. A mystery surround what happened to Mr Min, there is 10 years ago . She hopes to be ables to understand, what happened and save the soul of Min Yoongi his son. In Korea she meets her childhood friend Kim Sock Jin, the son of the police man, who investigated on the "Min's case". She will live in the Min's castle, where she will treat Min Young , and three triplets. What really happened there is 10 years ago ? Love can save the soul ?