Astrid Gaia, S-Rank Mercer, once known as Vera Nova. A regular 17-year-old girl. Troubled and desperate to get away from her abusive father, she runs away from home and encounters the mysterious organization known as the Galactic Mercer Corp. Ten years later Astrid retires from her tenure as a Mercer but instead of going home something unexplainable happens and Astrid wakes up 300 years in the future in the body of her 17-year-old self. A woman named Amelia Cloud; chief of the Interplanetary Justice Federation offers Astrid an offer she can’t refuse.