Accompanied by scientist Tatsuya Randou, the Randou family embarks on a global expedition in pursuit of ancient ruins housing the enigmatic Quetzalcoatl's legend, said to guard a magnificent treasure. Yet, shadowing their every move is the malevolent Gopurin, an organization thirsting for the fabled riches. Armed with the formidable super robot Acrobunch, the Randou family engages in a high-stakes race across the globe to claim the coveted treasure before their adversaries.