For ten years, a homeless dog wanders through life with nothing but a pure heart—a heart that guides him on an extraordinary journey filled with love, loyalty, and an enduring bond between human and dog. A bond that will remain in our hearts forever. His story unfolds in three stages: the quiet warmth of his first owner—a Japanese automotive engineer nearing retirement; the tense days with his second owner—a young immigrant from Burma working at a dog shelter; and finally, the lessons he unknowingly teaches his last owner—an art student who, perhaps for the first time, discovers the true meaning of love.