The story tells of Gin, a tiger-striped Akita Inu who is born and is trained harshly by a dog-trainer called Gohei Takeda (nickname is "Jii-Sama") to become a bear-dog because it is believed tiger-striped Akita Inus are the best to kill bears. A large monstrous bear called Akakabuto (Japanese for "red helmet") terrorizises Gin's hometown for several years.