Irene in Taeyeon's eyes is just a junior that she seldom to meet and a promising Girl Group member. Taeyeon in Irene's eyes is a very successful singer and role model of every trainee in SM and a very busy sunbae that she thought she won't ever encountered. What are the odds that Taeyeon shows up in every ty situation that she involved into? Coincidence? Or is it really as her member said, Taeyeon is secretly Taking care of her?