Board an interstellar vessel and set off to discover black holes! Planet Earth, year 2125. Space tourism is now in vogue, with the preferred destination being Sagittarius A*, the supermassive black hole at the center of the galaxy. Travelers are ready for launch. Accompanied by an experienced pilot and a state-of-the-art A.I., they will observe the life cycle of stars and discover how black holes work. But beware, in the surroundings of the galactic center, setbacks are to be expected...