Nowadays, with the development of science and technology, the quality of human life has been improved to an unprecedented peak. Even in terms of military and national defense, their presence is indispensable.
In the early 1930s, a scientist accidentally discovered a space-time tunnel while using a newly developed space-time detector to detect the universe. As soon as this news came out, it caused an uproar all over the world! All countries in the United Nations have made every effort and spent huge sums of money to specifically explore and develop the space-time tunnel.
Finally, at the end of the 30th century, the door to the space-time tunnel was completely opened. In order to prevent criminals from entering the time and space tunnel to tamper with the history and future of various countries, the United Nations has specially set up two departments.
Space-time Security Bureau and Space-time Supervisor.
These people are all the elites among the elites trained by the United Nations.
Ever since the existence of the space-time tunnel became known to the world, criminals have been trying to pass through the space-time tunnel. Under the watchful eye of the Space and Time Security Bureau, although very few people succeed, there are still a small number of people who rely on their own abilities to become one of the few who slip through the net.
And our story will start from here...