Ever since he can recall, 14-year-old Chuuta Kokonose has been bothered by a mysterious voice inside his head. Because of this, his unaware classmates mock him for his strange habit of talking to himself. One day, a three-eyed, jellyfish-like creature follows Chuuta home and suddenly fires a beam of light at him. He instantly finds himself in a room crowded with even more bizarre-looking creatures—in a location he soon realizes is a space police station. There, Laine Brick, the chief of the solar system bureau, informs him that he has been chosen as a suitable candidate to join their agency, ēlDLIVE. However, Misuzu Sonokata—Chuuta's classmate and crush, who turns out to be an ēlDLIVE member—objects to his joining, arguing that he lacks the qualities of an officer. Provoked by Misuzu's comments and urged by the voice in his head, Chuuta decides to take the qualifying exam to join the agency. Yet, the exam leads him to discover that the strange voice in his head was actually an alien living inside his body all along. ēlDLIVE follows Chuuta, Misuzu, and the rest of the solar system bureau as they strive to protect the citizens and public order of the universe.