In XO, Kitty Season 3, Kitty Song Covey returns to Seoul for her final year at KISS, determined to make it the perfect senior year. With a clear plan in mind, she hopes to strengthen her friendships, reconnect with her family roots, and finally define her complicated relationship with Min Ho. However, life refuses to follow her carefully organized checklist as unexpected secrets, emotional revelations, and shifting relationships begin to unravel everything she thought she understood. As feelings grow more intense and choices become more difficult, Kitty is forced to confront who she truly is and what she really wants for her future. Through moments of heartbreak, growth, and self-discovery, she learns that not everything can be planned—and sometimes, the most meaningful experiences come from embracing the unexpected.