The story begins on Destiny, the center of the Universe and the hub of all "The Galaxy Railways" terminals. Yuuki Manabu, a 20-year-old, joins the Space Defense Force (SDF) in honor of his late Father and Brother and to ensure the safety of the Galaxy Railways. The SDF is responsible for maintaining the most reliable transportation schedules throughout the Universe and faces challenges that include accidents, natural disasters, rescues, and space piracy along all railway lines. The mystery and charm of Layla Destiny Shura, a "Guardian of Destiny," unite the SDF and all railway lines on The Galaxy Railways. Layla possesses the extraordinary ability to foresee the destiny of planets, human beings, and other living entities. However, she is not allowed to reveal the challenges that wait for passengers departing from Destiny station. Still, her hidden powers awaken when she encounters individuals capable of altering the fate of these travelers. "An individual's own actions change their destiny. Tomorrow's happiness is grasped by the individual's hands," she believes. How will Layla interpret Yuuki's destiny and how will he face the unprecedented crisis that threatens The Galaxy Railways?