Tiffany and Taeyeon were bestfriends since they were toddlers. But when the two was just five, Tiffany had to go back to America because of her mother's illness, that got worser and worser each day. When she went back to South Korea Taeyeon introduced Tiffany to her boyfriend, Jang Wooyoung. Tiffany fell love at first sight but was afraid of what Taeyeon could do if she finds out