Ancient farm girl Mia Chandler is chased off a cliff by a wild boar, and accidentally travels to a modern supermarket with her ancestral iron abacus. With her exceptional arithmetic skills, she exposes the warehouse insider, fixes promotion chaos, optimizes shelf displays, and revives the nearly closed store. Using the abacus's cross-world travel ability, she shuttles between the two realms: building her career in the modern world, returning to her hometown to pay off usurious loans, leading the whole village to make a fortune with bamboo weaving crafts. She goes from bickering to standing side by side with supermarket owner Xander Wilson, writing a warm, down-to-earth story of mutual devotion across two worlds.
