A drunkard for a father, a household of poverty...For 17-year-old Atsuko, misfortune is all she knows and believes in. Then, one day, a chance encounter with Itaru - the wealthy heir of a huge corporation - changes everything. The two look identical, uncannily so. When Itaru curiously goes missing, Atsuko is roped into being his stand-in. There, in his shows, Atsuko must parade like a prince in a palace. She encounters many new experiences, but at what cost...?