In 2075, young Iris sees a mysterious boy dressed in a rainbow suit fall from the sky, coming from a distant and seemingly perfect future where time travel is a reality. Determined to help him return to his time, she secretly takes Arco in and embarks on an adventure with him that questions the relationship between humanity, technology and the place of nature in a world dominated by machines. As they try to find a way back to the future, the two discover a deep bond that forces them to choose between altering the course of time or accepting that some encounters exist only to teach us to grow.