Sasaki Kenji, a young AD Police member who always ignores his partner and solves each case by himself. Many of his partners have been wounded by that attitude. This time, his partner Paul is seriously injured during a mission and rumors says that nobody will team up with him anymore. One night, he goes to his usual bar and has a huge fight with a German named Hans. The next day, a new partner is waiting in his office, Hans, who he fought with the previous night!