Budding composer Tendou Kawahara flees to Mongolia after being belittled by renowned composer Gen Mikami. In Mongolia, Tendou meets Kanon, a Japanese girl who has a talent for playing the violin. After her mother's untimely death, Kanon moves to Japan with Tendou in search of her father. Tendou attempts to bring out Kanon's talent without success. Soon after, Kanon's aunt gives Kanon 3 pictures of her possible father. One of them dies of a heart attack soon after, another is homosexual and a third, Kent Gregory, lives in the United States and has been gravely ill for a long time.
Ultimately, Kanon goes to the United States, only to find Kent on his deathbed. Following his funeral, she returns to Japan.