Cha Hong-do blushes uncontrollably, which has made her a recluse. In order to go out she either has to dress like an old lady or wear a helmet to cover her head. She has had a secret crush on Jang Doo-soo, a detective, for the past seven years, but due to her social phobia she has only been able to give him food she has made. She is unable to even talk to him and runs away if he encounters her.
Then Hong-do meets Go Yi-seok, an egoistic psychiatrist who is emotionally awkward after the death of his older brother and dealing with his emotionally unstable mother.