Ditto is a beautiful love story set in the late 1990s in South Korea, where college student Kim Jong-Wook, and veterinary student Yun Soo-In, communicate with each other through a ham radio. They never meet in person, but they have developed a connection that runs deep. They talk about their lives, their feelings, and their hopes, without ever knowing what the other looks like.
Kim Jong-Wook, played by Korean heartthrob Ha Ji-won, is a charismatic guy who lives life to the fullest. He has a group of friends who are always up for a party, but he feels a sense of emptiness inside. He finds solace in his conversations with Yun Soo-In, played by Kim Ha-Neul, who is reserved, calm, and studious.
Their conversations take a turn when Soo-In asks Jong-Wook about his friend Yoo Chul, who she secretly has a crush on. Jong-Wook tells her that Yoo Chul is not good enough for her and that he will introduce her to someone better. In a twist of fate, Jong-Wook realizes that he has fallen in love with Soo-In, but doesn't know how to tell her.
They continue to talk on the radio, but their conversations become more intense, as they both struggle with their feelings for each other. Meanwhile, in their real lives, they cross paths without knowing it. They attend the same classes, and their friends start dating each other. They also have a mutual friend, who tries to bring them together, but they are both too shy to make a move.
As the year comes to an end, they agree to meet on Christmas day. However, things take a turn when Jong-Wook gets into a serious car accident and falls into a coma. Soo-In, who is devastated, visits him every day at the hospital, hoping that he will wake up. She starts to realize that she has developed strong feelings for him, but it might be too late.
Ditto is a poignant tale of love, friendship, and missed opportunities. The movie shows how two people can connect on a deeper level, despite not knowing anything about each other. It also highlights the importance of living in the moment and following your heart. With its beautiful cinematography, soulful soundtrack, and outstanding performances, Ditto is a must-watch for anyone who believes in the power of love.