‘Capital Operation’ is a political spy thriller. Some 15 years ago, an officer from Iran’s intelligence services, Hamed, went aboard to receive hospital treatment for a critical illness. While there, a couple of enemy spies, including Matias, identified and kidnapped him. Now, after one and a half decades, some enemy spies have arrived in Iran for a sabotage mission. One of them, Sara, falls in a big trouble during the mission and asks two of her colleagues, Matias and Patricia, to join her. Therefore, Matias and Hamed find themselves in another face-to-face struggle after a long while; a struggle that leads to several tough encounters.