What kind of story will a time-travel fan club's collective time-travel bring to that time and space? The lovely president, the steady and smart vice-president, the weird-haired celebrity who loves to join in the fun, and the four crazy time-travel fans in dormitory 701. In a legal incident, they traveled to an unknown era as they wished. They met the protagonists one after another and disrupted time and space. How will they face everything unexpectedly~ Let's wait and see~