 Fuki who lives with her grandfather Shoei in Taketomi Island, Okinawa, dreams of becoming a cameraman. In her childhood, her mother Masami left Fuki to live in Tokyo. Although Masami has not come back, Fuki receives birthday cards from Masami every year on her birthday. On Fuki s fourteenth birthday, Masami promises to confess everything when Fuki becomes 20 years old. After her graduation from high school, Fuki moves to Tokyo to work as a cameraman assistant. Fuki starts off her hectic life in Tokyo, and soon, her nineteenth birthday comes. As usual, she receives a birthday card from Masami. A year later...