On August 10th, 2019, Earth received a signal that was confirmed by hundreds of scientists as coming from an alien life form. The message read "Let us meet on Mars on July 7th, 2035." This event led to the formation of ST&RS, a space agency representing all of Earth. Following this, many events occurred rapidly, including the re-landing of people on the moon in 2022 and the construction of numerous new space stations. The Space Academy was established as a way to prepare future generations for careers in space exploration. On the same day that Earth received the message from the alien life form, a young boy named Shirafune Maho uttered his first word, which was "Mars." Since then, he has been fascinated by astronomy and determined to become an astronaut. He applied to the Space Academy along with his childhood friend, Hishihara Meguru, and a transfer student and genius classmate, Amachi Wataru. Despite having only a 1% chance of being accepted, they embarked on an arduous journey to achieve their goal.
ST&RS was released in French by Panini Comics from April 23, 2014, to February 4, 2015.