In the 1980s, Kyogoku Kosuke (played by Toshiaki Karasawa), a criminal police officer of the Criminal Division of Yokohama Central Police Station, followed the rough style of his predecessors in the Showa era, and rushed to the forefront of the case scene again and again regardless of his life. It was not until he encountered an explosion during a mission that the passionate policeman completely calmed down. He lay in a hospital bed and slept for 30 years. In the tenth year of the 21st century, Kosuke woke up without any warning. The earth-shaking changes in the world around him had already made him dumbfounded, and the changes in the people around him made him feel like he was in another world. With the help of his juniors, Kosuke returned to the police force and formed a partner with the herbivorous detective Mochizuki Tai (played by Masataka Kubota) of the Heisei generation. Two people who already have a huge gap in personality and age, coupled with a memory gap of 30 years, it can be imagined that their combination will inevitably be full of contradictions. On this day, the artificial intelligence introduced by the Yokohama Central Police Station caused a huge incident, and even led Japan to the brink of destruction. In order to prevent this unprecedented crisis, Kyogoku and Mochizuki joined forces!