Kazuma Harukaze is the main character in this tale, a lively and unburdened young boy who shares a farm with his younger sibling Sakura and his equine companion Lovely. Their abode offers them a clear view of Mt. Fuji. One fateful day, a "meteor" crashes in their vicinity, ultimately revealing Hinkeeru and Robony, a robotic horse, who have come from Muzanda to warn Earth of an impending peril.