Room.4
Kim Yeo-joo, a member of arguably Korea's top girl group, and Byun Baek-hyun, CEO of a major corporation.
The Luminous, a luxury hotel owned by Byun Baek-hyun, and the girl group "Moonrise," which Yeo-joo is a part of, are attending an event there.
What happened when they met in Baek-hyun's room, Room No. 4?
