One day, Shinnosuke and his friends discover a mysterious crop circle by the riverbank. There, they meet a beautiful girl who is searching for something. They decide to help her, but it turns out she has a big secret! By a twist of fate, they end up boarding a UFO and venture into space! Join Shinnosuke and his friends as they learn about the solar system, the habitable zone, exoplanets, and more! Will they be able to return safely to Earth? A grand space adventure is about to begin!