Suoh Detective Agency is not your ordinary private detective agency. It is the base and home to Team J.A.T., a group of four executors with the mission to fight crimes that slip through the cracks of police jurisdiction. The team must bring justice to evil while keeping their own existence a complete secret. Nevertheless, their teamwork is like clockwork, and their leader Yamato, a charismatic man with a tragic past, will do anything to protect the team he calls family!