"Cat Planet Cuties" (Asobi ni Iku yo!) is a science fiction comedy anime that blends elements of romance, action, and slice-of-life. The story centers around Kio Kakazu, a high school student with a passion for photography, whose life takes an unexpected turn when he encounters Eris, a cat-like alien from the planet Catia. Eris, along with her robotic companion Donyatsu, arrives on Earth as part of a cultural exchange mission to establish friendly relations between humans and the Catians. However, her presence attracts the attention of various factions, including the CIA, a secretive organization called DOGMA, and a group of humanoid dog-like aliens known as the Caninu, who oppose the Catians.

As Kio becomes entangled in Eris's mission, he is joined by his childhood friend Manami Kinjou, who harbors feelings for him, and Aoi Futaba, a tech-savvy classmate with a penchant for building gadgets. Together, they navigate the challenges posed by the competing factions while helping Eris adapt to life on Earth. The series explores themes of interspecies diplomacy, cultural misunderstandings, and the complexities of relationships, all while maintaining a lighthearted and comedic tone. The interactions between the characters, particularly Kio and Eris, drive much of the narrative, as they work to bridge the gap between their worlds and prevent conflicts from escalating. The anime balances its sci-fi premise with humor and occasional action sequences, creating a dynamic and engaging storyline.