Upon encountering Earth from the Azatos Empire's vessel, Chief Investigator Liza Luna initiates a plan to eliminate all life forms promptly, preserving only valuable resources. While conducting a survey of the planet, Liza stumbles upon the underwhelming progression of human civilization in comparison to other species. Intrigued, she descends to the planet's surface to conduct a thorough examination of its residents. Despite her initial skepticism, Liza ventures into a local cafe to explore Earth's culinary customs. Inside a cat-themed cafe, she encounters beings of unparalleled cuteness, unlike any encountered in the vast galaxy. Inspired by this charming revelation, Liza sets out to explore the myriad adorable creatures that populate Earth.