Ri Hwan reveals his mother that he and Haeng Ah are in love with each other. Still Sun Young doesn’t agree with that relationship and continues to meet Yi Seul and her mother to set the wedding date.
Ri Hwan finds out about his mother’s disease and doesn’t know how to react.
Leaving Sun Young’s house and crying sadly from all the thinks she heard there, Haeng Ah fainted on the street. Seok Joon was around and saw her. He took her home and staid with her until Ri Hwan arrived. Knowing that Haeng Ah is uncomfortable in hospitals and that Ri Hwan is a doctor, Seok Joon called Ri Hwan over.
After Seok Joon left, Ri Hwan calls Tae Hee to find out what happened. While talking to Tae Hee, Ri Hwan realized that when he was arguing with his mother, Haeng Ah was there, hiding, and heard everything.
All night Ri Hwan took care of Haeng Ah. In the morning she woke up and seeing Ri Hwan there, Haeng Ah pretended that she isn’t hurting. She pretended that she fainted because she was too busy to eat the day before. But Ri Hwan knows the truth.
Haeng Ah made a decision! Now that Sun Young is sick, Haeng Ah will move into the third floor of Sun Young’s house.
Haeng Ah talks on the phone with Seok Joon to thank him for helping her when she fainted on the street. Seok Joon asks her to meet and talk in person. They’ve met later. Seok Joon remembered that it’s Haeng Ah’s birthday and brought her cake. He apologized for not being there for her last year. He is willing to change for her. He is willing to make up for all the mistakes he did in the past if Haeng Ah will return to his side.
Sun Young plans to marry Ri Hwan soon with a person that can protect him. And the person that can protect Ri Hwan no matter what is Yi Seul, because of Yi Seul’s family background. Sun Young meets with Yi Seul’s mother and later with Yi Seul. She tells Yi Seul about her disease.
Ri Hwan brought some flowers for his mother. He wants to apologize for how he treated her the other night. At the hospital Ri Hwan found out about his mother’s disease. After staying sit for a long time thinking about his mother and Haeng Ah, Ri Hwan got up and went to drink with Ji Hoon. He got drunk.
Haeng Ah’s co workers prepared her a birthday party. When she came in and saw the surprise that everyone prepared her, Haeng Ah started crying.
One his way home, Ri Hwan met Haeng Ah. They are both crying. Ri Hwan goes to Haeng Ah and hugs her.