At the beginning of the 21st century, the population continued to grow, and the demand for jobs and housing became the primary problem for people. The original land was no longer enough to meet the development of society, so the Japanese government carried out a large-scale land reclamation project in the sea area outside Tokyo Bay, filling a total area of 450,000 square meters, connecting the first artificial island of Kisarazu and the second artificial island of Kawasaki, and the construction of a large breakwater of 15 kilometers could begin. This not only means that the large ring road around the capital circle is completely open to traffic, but also more than a dozen water gates can use tidal differences to drain water. The most important thing is to ensure that Tokyo has 45,000 hectares of land for the next ten years. Since Tokyo is an international metropolis built on the model of "The Eternal City of Babylon", this "Babylon Project" can be called the largest sea surface engineering project of this century. In order to speed up work efficiency, build larger buildings and cope with this huge project, a large robot specially used for industrial use was developed, called Labor. After they were widely used, in addition to increasing the efficiency of construction and solving housing problems, they also increased a lot of employment opportunities; however, at the same time, a new problem has also emerged, that is, the frequent occurrence of labor crimes. These may be just drunk driving, or just the driver's impulsiveness, or criminals have converted labor into criminal tools. However, all of this not only destroys the surrounding environment, but also makes social order chaotic. Society has entered a new era. Humans have created robots that can be operated to replace them in certain dangerous and heavy tasks. These robots are often used in the field of engineering and construction. However, it is precisely because of the powerful power of robots that criminals are also ready to move. Therefore, as one of the national tools, the police force will naturally have corresponding institutions to deal with the occurrence of robot incidents. Under the unstable situation of this extremely special era, the Japanese Police Department decided to set up a new department-Special Vehicles Section 2 to specifically combat labor-related criminal cases. And this kind of patrol-labor (patrol police robot) dedicated to the police force is called Patlabor!