Kim Taeyeon is one of Korea's most promising tennis juniors. She seems head and shoulders above all other junior players her age, until she runs into a previously unheard of junior, Tiffany Hwang who moved from America to train in Korea and forms a compelling rivalry with her. Their relationship only gets more complicated when they somehow end up in the same high school class at the beginning of their tennis rivalry and end up becoming fast friends. Friends off court and bitter rivals on it, what will become of their love-hate relationship? 

All in Taeyeon's POV