"Kore ga UFO da! Soratobu Enban" is a science fiction anime series that revolves around the sudden appearance of unidentified flying objects (UFOs) in Japan, which disrupts the lives of ordinary citizens and sparks a global mystery. The story begins when a group of high school students in a small rural town witnesses a strange, disc-shaped object hovering in the sky. The UFO, which emits a peculiar light and sound, disappears shortly after, leaving behind a trail of confusion and speculation.

As the government and media scramble to investigate the phenomenon, the students—led by the curious and resourceful protagonist, Hiroshi—decide to uncover the truth on their own. Hiroshi, along with his friends Yumi, a tech-savvy classmate, and Takuya, a skeptical but loyal friend, forms a makeshift investigation team. Their efforts lead them to discover that the UFOs are not random occurrences but part of a larger, coordinated effort by an advanced extraterrestrial civilization.

The aliens, who remain enigmatic throughout much of the series, communicate through cryptic symbols and patterns that appear in the sky and on electronic devices. The students decode these messages, revealing that the aliens are conducting experiments on Earth to study human behavior and emotions. The experiments often involve manipulating the environment, such as altering weather patterns or causing localized time distortions, which create both wonder and chaos.

As the story progresses, the students encounter other individuals affected by the UFOs, including a reclusive scientist who has been studying the phenomenon for years and a journalist determined to expose the truth. These characters provide additional perspectives on the events, deepening the mystery and raising questions about humanity's place in the universe. The series balances episodic encounters with the UFOs and their effects on the town with an overarching narrative about the students' growing understanding of the aliens' intentions.

The climax of the series occurs when the students finally make direct contact with the extraterrestrial beings. This encounter reveals that the aliens are not hostile but are instead seeking to understand humanity's capacity for empathy and cooperation. The series concludes with the UFOs departing Earth, leaving behind a transformed world and a sense of hope for the future. The characters, now changed by their experiences, reflect on the lessons they have learned about curiosity, resilience, and the importance of connection.

"Kore ga UFO da! Soratobu Enban" combines elements of mystery, adventure, and science fiction to explore themes of exploration, communication, and the unknown. The series maintains a neutral tone, presenting the events and characters in a straightforward manner that allows viewers to draw their own conclusions about the story's implications.