Feeling powerless against the urge to have a grandchild for her parents while her indifferent husband shows no interest in sex, only focusing on his computer design work and smoking addiction. This makes her feel constantly frustrated and blame herself for not fulfilling the duty of a wife. Seeing her daughter-in-law upset about this and wanting to have a grandchild soon, the father-in-law tries everything to help her. He believes that she doesn't excite her husband because she lacks experience in seducing and attracting men, so he decides to offer himself to help her gain more experience in the bedroom. However, as time goes by, she realizes that only her father-in-law can bring her happiness, satisfaction, and only he can create a grandchild for herself.