With the discovery of a dimensional tunnel, a new era of space exploration begins, allowing travel to distant planets beyond our solar system. Hoshiwata Goro, a determined space traveler, embarks on a quest to find his elusive father, armed only with an aged photograph as a clue. To pursue his mission, Goro joins the youthful space tourism company 'YAT,' specializing in planetary tours. However, a mishap during his journey leads to the demise of their spacecraft, compelling Goro to labor for YAT as reparation. This unexpected twist heralds a series of thrilling space escapades for him.