Professor Yun teaches philosophy at a university. He is guided by his own virtuous beliefs, though he was kicked out of seminary school as a student himself for having sex. He is married to a cellist who is highly religious. After Professor Yun is propositioned to have sex to pass a student, he later has a stroke in class and becomes paralyzed.
Sook-Hee is a caregiver who goes by her own rules. She is highly sought after because she has "cured" all of her patients. Sook-Hee's next client is Professor Yun.
