Living in Ogikubo, a unique area where humans and aliens coexist in the Earth's only Space Immigration Zone, Luluco is a bubbly middle schooler who hopes for a normal life. However, her situation makes it impossible. One day, her father accidentally ingests a sleeping pill, causing him to freeze, and Luluco ends up shattering him in her efforts to assist. To get help, she turns to her father's employer, the Space Patrol, where she is enlisted as a temporary worker for covert operations. She must don a Space Patrol uniform to fight wrongdoing in her school while attempting to blend in. Luluco quickly comes to realize that appearing unremarkable is far more complex than she imagined because the suit's automated systems' enthusiasm makes maintaining a typical teenager's existence increasingly challenging.