Growing up as the sole human in Granbell Kingdom, an amusement park run by robots on the planet Granbell, Shiki's world takes a turn when Rebecca Bluegarden and her cat Happy stumble upon this forgotten place after a century of abandonment. Initially aiming to create entertaining content for their B-Cube channel, they instead forge a bond with the awkward but endearing Shiki. As the robotic denizens of Granbell turn hostile, the trio escapes to Rebecca and Happy's home world, Blue Garden. There, Shiki enlists as an adventurer in the Shooting Starlight guild and delves into the enigmatic lore surrounding Mother, a mysterious deity. Intrigued by a strange connection to Mother, Shiki embarks on an unprecedented quest to locate her, accompanied by Rebecca and Happy. Together, they document their adventures, forge new friendships, and unravel the secrets shrouding Mother's existence.