Ahmad, the accountant of Kaviran Company, has the responsibility of delivering the salaries of local workers to a remote border area in the eastern part of the country. During one of his inspection trips, he is approached and asked to take an ailing elderly woman, a bride, and her young brother with him on his journey. His mission now includes dropping them off at a village along the way.
As they set out, a powerful sandstorm strikes, causing them to lose their way in the vast desert. They accidentally stumble upon an abandoned castle, and their encounter with the mysterious inhabitants of the castle sets in motion a series of unexpected events.