The basic setting of the story overlaps with “Fantastic Voyage” in that both the U.S. and the Soviet Union were engaged in secret state projects during the Cold War. The time tunnel was on the verge of completion, but the young scientist Tony Newman, who had devoted his life to its development out of fear that the huge national budget would be cut off, voluntarily entered the tunnel as an experimental subject for time travel. This is “The Fly” in this area. The time and place to which he is transported by time travel can be explored by special radiation emitted from the time tunnel, and his survival status is shown audiovisually on a screen. In order to rescue Tony, Doug Phillips, the Pj director, is transported to the time and space where Tony exists... but the two do not return safely and the time transfer is repeated. The time tunnel, several kilometers long, is located in the Arizona desert, in the deepest part of a research facility 800 floors below ground, under the jurisdiction of the U.S. Army. Images of the shafts that run up and down the massive facility overlap with scenes of the vast underground facilities that are the legacy of the Krell in “Forbidden Planet. Since “Lost in Space,” which was produced in parallel, gained popularity by changing its line for younger viewers, this work also changed to the same line, but as a result, the viewership did not grow, and it is regrettable that the production was terminated after 30 episodes.