Kim Taeyeon and Tiffany Hwang are strangers and somehow, they had to live together due to their fathers who are actually friends. Taeyeon thought of Tiffany as a spolit brat and thinks that things will not work well with each other. On the first day at night, there were lightning and thunder. Tiffany was really scared and screamed, making Taeyeon, who was not asleep, go to her room and comfort her. The next day, during a dinner with their fathers, Tiffany came home with her boyfriend and an

Taeyeon quitted her job as Tiffany's bodyguard but regretted it. She came back to the Hwang's mansion and was told by Mr Hwang that she could stay until Tiffany gets married.   During a dinner at a restaurant, Mr Hwang made an announcement that Tiffany was getting married. Tiffany shocked everyone including Taeyeon by telling everyone that she was dating Taeyeon. Before she kissed Taeyeon, she told Taeyeon to not fall in love with her as she was straight. What Tiffany did not know