Understand the Plot of the Citadel Series

The core premise of Citadel revolves around a global spy agency that has fallen, and the two agents who must piece together their past to prevent a new world order. The series kicks off eight years after the fall of Citadel, an independent global spy agency dedicated to upholding the safety and security of all people. It was secretly destroyed by Manticore, a powerful syndicate that manipulates the world from the shadows.

The story primarily follows two former elite Citadel agents, Mason Kane (Richard Madden) and Nadia Sinh (Priyanka Chopra Jonas). Both had their memories wiped to protect them during Citadel's downfall. Mason has since built a new life under a new identity, unaware of his past as a super-spy. Nadia, however, is living a more dangerous, isolated existence, also without her memories.

Their paths cross again when Bernard Orlick (Stanley Tucci), a former Citadel colleague, tracks Mason down. Bernard needs Mason's help to prevent Manticore from establishing a new world order. Mason, with Bernard's guidance, must find Nadia and together they embark on a dangerous mission across the globe, all while slowly recovering fragments of their past, their complicated relationship, and the truth behind Citadel's destruction. The series is a high-octane spy thriller filled with action, intrigue, and a central mystery surrounding the agents' identities and the true enemy.

Pro tip: Citadel is designed as a global franchise, with interconnected local language spin-off series (like Citadel: Diana) that expand on the universe and characters, offering different perspectives on the overarching Manticore conspiracy.