Gucchio stands among three children at the heart of a struggle against mysterious monsters and robots threatening the vital RGB light resources essential for life. He exhibits a strong aptitude for mechanics, showcasing technical skill and problem-solving prowess. His personality combines gluttony, driving him to excessive eating, and a chicken-hearted nature that frequently surfaces as timidity or fear in perilous situations.

He operates alongside Ryu, whose mischievous antics mask ambitions of world conquest, and Becky, whose cute exterior conceals a significantly twisted personality. This trio receives aid from alien entities including Rosso, Gibson, and Bo—beings who adopt animal forms while embodying distinct principles, purposes, tastes, and hobbies. Through exchanges with these extraterrestrial allies, Gucchio and his companions learn critical lessons about bridging differing perspectives through communication and collaboration.