Detective Tokuno of the Criminal Affairs division visits the Chief for a friendly game of Go. Although the Chief always loses, Natsumi decides maybe there is a way for the Chief to win this time and rallies the Traffic department to challenge the Criminal Affairs division to a friendly game of baseball. While the teams play, Tokuno and Chief have their own Go battle again. But where there's baseball, there is bound to be the vigilante hero, Strike-Man!
