In March 2004, when Estonia joins NATO and becomes a top target for the Russian intelligence, prompted by umbrage, an official at the Estonian Ministry of Defence turns into a Russian spy. Hereon begins a cat-and-mouse game between him and a determined young Estonian counterintelligence officer as they navigate the twists and turns of the action framed by challenges in both their personal lives. The stylish and thrilling six-part spy drama series is inspired by espionage scandals from Estonia’s recent history.

It’s been a decade since Estonia has joined NATO and Alfred Vint continues to dutifully serve both masters-the Estonian Ministry of Defense and the Russian intelligence service. But the Russians want more. Vint is instructed to keep an eye on a politician and committee head of the Estonian Internal Security Service, and this time his wife Heli must join him in the espionage. With former nemesis Marko Arrak still on his back, will Alfred Vint be revealed as the traitor?