Several murders take place in Istanbul within a week. Some of those killed are people under the surveillance of the National Security Organization. They belong to the Mirak Organization, an international anarchist gang, and take many clues with them. The National Security Service determines that the gang is up to something secret. They only have the information of a single spy they suspect. They need to figure out what the work to be done through this spy. Kemal, one of the most important police officers of the Security Organization, will try to solve this equation with many unknowns.