Nini and Nene are twin kittens who go on adventures in their balloon ship, just like they are happily doing today. However, their journey takes an unexpected turn when a thunderstorm suddenly appears, striking their balloon and causing it to crash. They land on a large cloud and enter a nearby house to seek help. Inside, they meet a mysterious girl. Graduate Work 2025, Tokyo University of the Arts, Graduate School of Film and New Media, Department of Animation. (Source: Geidai Animation)