Appare Sorrano, a peculiar inventor hailing from a humble countryside village in Japan during the late 1800s, harbors lofty aspirations. His fascination with steamships during childhood left an indelible impression, inspiring him to master the art of creating a variety of machines by delving into myriad scientific texts. Appare's ultimate ambition is to sail beyond the heavens, across the boundless ocean, and explore the moon. However, fate appears to have different plans in store for him, as he ends up stranded at sea in his mini steamship with a timid samurai named Kosame Ishikki for company. Kosame's sole duty is to monitor Appare's unusual behavior, but his presence is of little assistance. Just when all hope seems lost, a colossal steamship rescues them and transports them to Los Angeles. Being penniless and directionless, they decide to enter the "Trans-America Wild Race," providing Appare the chance to construct his own automobile, while Kosame aims to win the cash prize and return home. But, with fierce adversaries and unexpected obstacles lurking in the wilderness, how far can Appare and Kosame venture on this thrilling journey?