Italy, at the end of the 21st century. Quinto, a gentle, naive man on his quest to find the fabled 'City in the Sky' arrives at a dilapidated family-owned hotel run by transsexual Dora and her drug addict son. Locked in one of the rooms is Ai, a malfunctioning android prostitute, waiting to be deactivated. By error at check-in, Quinto meets her.