"XO, Kitty" is a comedy-drama series about a teenage girl who runs a blog about relationships. Kitty Song Kovi jokingly calls herself a matchmaker, as she gives girls all over the world helpful advice to help them find love. She is convinced that she knows everything about relationships. But when it comes to her own personal life, Kitty suddenly realizes that love is much more complicated than she could have imagined. In pursuit of her own happiness, she sets off to another continent.