A kid who loves space gets handed a housekeeping robot, then accidentally frees an alien consciousness trapped inside her. What follows is pure visual storytelling: water bending around a spacecraft, the animation itself becoming the magic rather than explaining it. The voice acting sells the impossible friendship between a lonely boy and an entity that doesn't understand human warmth yet desperately wants to. Aoi Yuuki's performance carries the weight of something ancient trying to sound like a child. The pacing stumbles in places, rushing moments that needed breathing room. What remains is a film that trusts its animation to do what dialogue cannot, a love letter to the space-obsessed kid inside anyone who has ever looked up.

In the summer of 2049, Yuuma is an elementary school kid who loves space and astronomy. He is thrilled when his parents buy a robot called Nanako, then let down to find she is little more than a plain housekeeping unit. When he finally tries talking to her about space, her system crashes and something else takes control: an alien AI aboard a spacecraft that broke down while coming to Earth decades ago. Dormant ever since, the craft has been hiding in plain sight as the housing complex where Yuuma lives, a building set to be torn down after this last summer. The alien asks for his help getting back into space, and Yuuma and his friends team up on one final summer project to send the ship home. The film is a science fiction drama adapted from a manga by Imai Tetsuya.