Ken is a young boy of 15 who has a heart disease since he's a baby, he survived until now but it's already a miracle. His disease gets worse as he's growing up. His friend Kira who played the piano seems to have stopped and has lost the will to play again, maybe because of her family. And Koiichi seems to avoid Ken though they used to be really good friends. This story is the story of a miracle, the one of the Inuwashi (royal eagle), to fully understand this miracle you need Ken's strong will and the support he gaves to his friends though he is the one who is ill.