"Love is friendship set on fire." - Jeremy Taylor

Jessica Jung grew up in the close-knit environment that was the SM Family. She never worried about meeting new people because she would always have them. Even after she started working, they all worked together, so they were always by her side. As a result she became shy and uncomfortable around strangers near her own age. She was able to comfortably able to treat adults respectfully and younger people as cute dongsaengs, but she was uncomfortable making new friends.

However Tiffany Hwang (real name Stephanie), her friend and groupmate, had a natural skill for in and made friends left and right. One day Tiffany decided to introduce Jessica and Taecyeon. Taecyeon was Tiffany's close friend since before debut.

Though he appears outwardly loud and dorky, Taecyeon is really a quiet and reserved person with deep thoughts who cherishes his friendships. Tiffany thought Taecyeon might be the one to 

break Jessica out of her shell. Taecyeon immediately saw Jessica for who she was and believed he found a kindred spirit. 

After Jessica and Taecyeon meet several times with Tiffany and Wooyoung, they become a lot closer. They are both people who have many friendships, but cherish a select few with whom they form strong attachments. As they get to know each other better, they mistake the sparks flying between them as a close bond. 

Yoona was busy with her schedule when Jessica and Taecyeon's friendship began. However, after learning about it, she too wanted to become friends with Taecyeon. Yoona is overtly and sometime inappropriately friendly with all her friends and is often mistaken for having deeper feelings. Taecyeon becomes one of her inadvertent victims. 

Will it be too late for Taecyeon and Jessica?