Dog is a Japanese slang for police, and Tokyo Dogs is a story about detectives working in Tokyo. Sou Takakura (Shun Oguri) is an American trained detective working in Tokyo police department. He's assigned to body guard and various duties involving dangerous criminals. He ends up playing the cat and mouse game with the criminals, both sides vying to get the upper hand. How he corners the criminals, and bring them to justice is the focus of this story. The stories follow pat formula of detective(s) following various bad guys, and for a Japanese drama there's lot more usage of guns than usual. Lot better stories, and acting are available if you watch any of the more recent Hong Kong action drama. Better watch those instead of this one.