The long-awaited season three of 'Tehran' has arrived on Kan, bringing tension and intrigue as Mossad agent Tamar Rabinayan attempts to escape Iran. In the first episode, Rabinyan is trapped in Iran, pursued by both the Mossad and the Iranian Revolutionary Guards. She must find a way to regain the Mossad's support to survive. The episode introduces a new character, a nuclear supervisor played by Hugh Laurie, whose loyalties are unclear. The first episode ends with Rabinyan uncovering new information about Iran's nuclear race.