My Nights Shine Brighter Than Your Days

While she was living her moment, she could not live in her full name. While working as a tenpro in Gangnam for her younger sister who is a tennis player, one day she is murdered by a mysterious person. She cut off the relationship herself because she could not accept that her sister was working in the room salon, but who had doubts about her death. Enter the road. Their night started like that, and her night. What will her night look like?