An, her husband and her father-in-law live a poor life in the mountains in the countryside. An has been taking care of her father-in-law, who has become weaker, but the family is struggling financially and they don't have the money to take him to the hospital. One day, An finds a job posting at a soapland in the city. While taking care of her father-in-law, An unintentionally uses him to practice sex acts, but her father-in-law quickly regains his strength...