After getting drunk, Gyu-rim runs into Mu-jin on her way home, but the next morning, she suffers from a terrible hangover and has no memory of meeting him. Still, she can't shake the feeling that something is missing and searches for what she may have lost, left with an uneasy feeling. Meanwhile, Yoon-hee confronts Mu-jin and harshly declares that she will never approve of his relationship with her daughter.