Shiki is a boy who's always dreamed of making new friends from outside the Granbell Kingdom, his amusement park home filled with robots. He gets his wish when two young adventurers—Rebecca and her talking blue cat, Happy—come looking for interesting things to record for their B-Cube channel. So begins the tale of Shiki Granbell, who learns the world beyond Granbell is far bigger than he could have possibly imagined.