Spank and Barron were tled by a great bull on the beach. When I try to escape, Baron gets caught. A helpless spunk. And Jack, a cool one-eyed dog, appeared there and helped me. That dog was the old dog of Grandpa Gen, the manager of the harbor, and was sent to Hokkaido five years ago. Over the long years, while falling into a drifting dog, we were all touched by the sight of Jack who asked for the source and there was no voice. One day, the yacht of Seri was washed away. At this rate, it will be life-threatening. Jack made himself in the rough sea!